Dramatic Growth of Open Access September 30, 2020

While many aspects of our lives and activities have slowed down during the COVID pandemic, this has not been the case with open access! The OA initiatives tracked through this series continue to show  strong growth on an annual and quarterly basis. Important milestones are being reached, and others will be coming soon.

Highlights

The Directory of Open Access Journals now lists over 15,000 fully open access, peer reviewed journals, having added 379 journals (> 4 per day) in the past quarter, and now provides searching for over 5 million articles at the article level. 

 A PubMed search for “cancer” limited to literature from the past 5 years now links to full-text for over 50% of the articles.

The Bielefeld Academic Search Engine now cross-searches over 8,000 repositories and will soon surpass the milestone of a quarter billion documents

Anyone worried about running out of cultural materials during the pandemic will be relieved to note that the Internet Archive has exceeded a milestone of 6 million movies in addition to over 27 million texts (plus audio, concerts, TV, collections, webpages, and software).

Analysis of quarterly and annual growth for 39 indicators from 10 services reflecting open access publishing and archiving (Internet Archive, Bielefeld Academic Search Engine, Directory of Open Access Books, bioRxiv, PubMedCentral, PubMed, SCOAP3, Directory of Open Access Journals, RePEC and arXiv) demonstrates ongoing robust growth beyond the baseline growth of scholarly journals and articles of 3 – 3.5 per year. Growth rates for these indicators ranged from 4% – 100% (doubling). 26 indicators had a growth rate of over 10%, 15 had a growth rate of over 20%, and 6 had a growth rate of over 40%. The full list can be found in this table.

Thank you to everyone in the open access movement for continuing the hard work that makes this growth possible.

The open data edition is available here:   

Morrison, Heather, 2020, “Dramatic Growth of Open Access Sept. 30, 2020”, https://doi.org/10.5683/SP2/AVBOW6, Scholars Portal Dataverse, V2 

This post is part of the Dramatic Growth of Open Access Series.  

Cite as: Morrison, H. (2020). Dramatic Growth of Open Access September 30, 2020. The Imaginary Journal of Poetic Economics https://poeticeconomics.blogspot.com/2020/10/dramatic-growth-of-open-access.html

Dramatic Growth of Open Access September 30, 2020

While many aspects of our lives and activities have slowed down during the COVID pandemic, this has not been the case with open access! The OA initiatives tracked through this series continue to show  strong growth on an annual and quarterly basis. Important milestones are being reached, and others will be coming soon.

Highlights

The Directory of Open Access Journals now lists over 15,000 fully open access, peer reviewed journals, having added 379 journals (> 4 per day) in the past quarter, and now provides searching for over 5 million articles at the article level. 

 A PubMed search for “cancer” limited to literature from the past 5 years now links to full-text for over 50% of the articles.

The Bielefeld Academic Search Engine now cross-searches over 8,000 repositories and will soon surpass the milestone of a quarter billion documents

Anyone worried about running out of cultural materials during the pandemic will be relieved to note that the Internet Archive has exceeded a milestone of 6 million movies in addition to over 27 million texts (plus audio, concerts, TV, collections, webpages, and software).

Analysis of quarterly and annual growth for 39 indicators from 10 services reflecting open access publishing and archiving (Internet Archive, Bielefeld Academic Search Engine, Directory of Open Access Books, bioRxiv, PubMedCentral, PubMed, SCOAP3, Directory of Open Access Journals, RePEC and arXiv) demonstrates ongoing robust growth beyond the baseline growth of scholarly journals and articles of 3 – 3.5 per year. Growth rates for these indicators ranged from 4% – 100% (doubling). 26 indicators had a growth rate of over 10%, 15 had a growth rate of over 20%, and 6 had a growth rate of over 40%. The full list can be found in this table.

Thank you to everyone in the open access movement for continuing the hard work that makes this growth possible.

The open data edition is available here:   

Morrison, Heather, 2020, “Dramatic Growth of Open Access Sept. 30, 2020”, https://doi.org/10.5683/SP2/AVBOW6, Scholars Portal Dataverse, V2 

This post is part of the Dramatic Growth of Open Access Series.  

Cite as: Morrison, H. (2020). Dramatic Growth of Open Access September 30, 2020. The Imaginary Journal of Poetic Economics https://poeticeconomics.blogspot.com/2020/10/dramatic-growth-of-open-access.html

Dramatic Growth of Open Access 2019

 2019 was another great year for open access! Of the 57 macro-level global OA indicators included in The Dramatic Growth of Open Access, 50 (88%) have growth rates that are higher than the long-term trend of background growth of scholarly journals and articles of 3 – 3.5% (Price, 1963; Mabe & Amin, 2001). More than half had growth rates of 10% or more, approximately triple the background growth rate, and 13 (nearly a quarter) had growth rates of over 20%.

Newer services have an advantage when growth rates are measured by percentage, and this is reflected in the over 20% 2019 growth category. The number of books in the Directory of Open Access Books tops the growth chart by nearly doubling (98% growth); bioRxiv follows with 74% growth. A few services showed remarkable growth on top of already substantial numbers. As usual, Internet Archive stands out with a 68% increase in audio recordings, a 58% increase in
collections, and a 48% increase in software. The number of articles searchable through DOAJ grew by over 900,000 in 2019 (25% growth). OpenDOAR is taking off in Asia, the Americas, Africa, and overall, with more than 20% growth in each of these categories, and SCOAP3 also grew by more than 20%.

The only area indicating some cause for concern is PubMedCentral. Although overall growth of free full-text from PubMed is robust. A keyword search for “cancer” yields about 7% – 10% more free full-text than a year ago. However, there was a slight decrease in the number of journals contributing to PMC with “all articles open access”, a drop of 138 journals or a 9% decrease. I have double-checked and the 2018 and 2019 PMC journal lists have been posted in the dataverse in case anyone else would like to check (method: sort the “deposit status” column and delete all Predecessor and No New Content journals, then sort the “Open Access” column and count the number of journals that say “All”. The number of journals submitting NIH portfolio articles only grew by only 1. Could this be backtracking on the part of publishers or perhaps technical work underway at NIH?

Full data is available in excel and csv format from: Morrison, Heather, 2020, “Dramatic Growth of Open Access Dec. 31, 2019”, https://doi.org/10.5683/SP2/CHLOKU, Scholars Portal Dataverse, V1

References

Price, D. J. de S. (1963). Little science, big science. New York: Columbia University Press.

Mabe, M., & Amin, M. (2001). Growth dynamics of scholarly and scientific journals. Scientometrics, 51(1), 147–162.
This post is part of the Dramatic Growth of Open Access Series. It will be cross-posted to Sustaining the Knowledge Commons.
 Cite as:  Morrison, H. (2019). Dramatic Growth of Open Access 2019. The Imaginary Journal of Poetic Economics  https://poeticeconomics.blogspot.com/2020/01/dramatic-growth-of-open-access-2019.html

Dramatic Growth of Open Access 2019

 2019 was another great year for open access! Of the 57 macro-level global OA indicators included in The Dramatic Growth of Open Access, 50 (88%) have growth rates that are higher than the long-term trend of background growth of scholarly journals and articles of 3 – 3.5% (Price, 1963; Mabe & Amin, 2001). More than half had growth rates of 10% or more, approximately triple the background growth rate, and 13 (nearly a quarter) had growth rates of over 20%.

Newer services have an advantage when growth rates are measured by percentage, and this is reflected in the over 20% 2019 growth category. The number of books in the Directory of Open Access Books tops the growth chart by nearly doubling (98% growth); bioRxiv follows with 74% growth. A few services showed remarkable growth on top of already substantial numbers. As usual, Internet Archive stands out with a 68% increase in audio recordings, a 58% increase in
collections, and a 48% increase in software. The number of articles searchable through DOAJ grew by over 900,000 in 2019 (25% growth). OpenDOAR is taking off in Asia, the Americas, Africa, and overall, with more than 20% growth in each of these categories, and SCOAP3 also grew by more than 20%.

The only area indicating some cause for concern is PubMedCentral. Although overall growth of free full-text from PubMed is robust. A keyword search for “cancer” yields about 7% – 10% more free full-text than a year ago. However, there was a slight decrease in the number of journals contributing to PMC with “all articles open access”, a drop of 138 journals or a 9% decrease. I have double-checked and the 2018 and 2019 PMC journal lists have been posted in the dataverse in case anyone else would like to check (method: sort the “deposit status” column and delete all Predecessor and No New Content journals, then sort the “Open Access” column and count the number of journals that say “All”. The number of journals submitting NIH portfolio articles only grew by only 1. Could this be backtracking on the part of publishers or perhaps technical work underway at NIH?

Full data is available in excel and csv format from: Morrison, Heather, 2020, “Dramatic Growth of Open Access Dec. 31, 2019”, https://doi.org/10.5683/SP2/CHLOKU, Scholars Portal Dataverse, V1

References

Price, D. J. de S. (1963). Little science, big science. New York: Columbia University Press.

Mabe, M., & Amin, M. (2001). Growth dynamics of scholarly and scientific journals. Scientometrics, 51(1), 147–162.
This post is part of the Dramatic Growth of Open Access Series. It will be cross-posted to Sustaining the Knowledge Commons.
 Cite as:  Morrison, H. (2019). Dramatic Growth of Open Access 2019. The Imaginary Journal of Poetic Economics  https://poeticeconomics.blogspot.com/2020/01/dramatic-growth-of-open-access-2019.html

2018: best year yet for net growth of open access

Highlights: this edition of the Dramatic Growth of Open Access features charts that illustrate that 2018 showed the strongest growth to date for open access by number of documents searchable through BASE, PubMedCentral, arXiv, DOAJ, texts added to Internet Archive, and journals added to DOAJ.

A Bielefeld Academic Search Engine (BASE) search encompasses over 19 million more items at the end of 2018 – about 60% or 11.4 million are open access. This brings the total documents searchable through BASE to close to 140 million (about 84 million open access)

PubMedCentral added 600,000 items in 2018, and surpassed a milestone of 5 millions items this year (now 5.2 million items)

arXiv added 140,000 items in 2018, bringing the total close to 1.5 million items.

The DOAJ article search grew by more than 800,000 articles in 2018, bringing the total number of articles searchable through DOAJ to about 3.6 million.

2018 was also the best year to date for DOAJ net journal growth. 1,707 journals were added for a current total of over 12,000 journals. Negative growth in 2016 illustrates the impact of the DOAJ weeding / re-application process.

4.5 million more texts are available through Internet Archive, bringing the total close to 20 million.

The following table provides data on total number of items as of December 31, 2018, growth in 2018 by number and percentage, in descending order by growth in percent. In interpreting percentage growth, consider total and numeric growth. bioRxiv nearly doubled in size this year, indicating a fairly new but healthy and rapidly growing service; but this reflects growth of about 20 thousand documents, a small fraction of the 600,000 items added by PMC for a 13% growth rate.

2018 growth (percent)   2018 total 2018 growth (number)
110% bioRxiv # articles  39,570 20,748
74% Internet Archives software 346,320 147,320
39% SCOAP3 # article 25,163 7,121
30% Internet Archive texts 19,570,789 4,570,789
30% DOAJ searchable articles 3,624,154 832,453
29% Internet Archive audio (recordings) 4,909,271 1,109,271
28% DOAB # books 13,253 2,938
25% Internet Archive collections 389,778 76,778
24% Internet Archive videos (movies) 4,701,129 901,129
21% DOAJ journals searchable at article level 9,479 1,670
16% PubMed keyword search: cancer- last year – free fulltext 65,766 9,154
16% DOAJ # journals 12,434 1,707
16% BASE # documents 139,476,029 19,092,606
16% Internet Archives television 1,733,000 233,000
15% DOAB # publishers 285 38
14% PMC journals some articles OA 758 94
13% PMC # items 5,200,000 600,000
13% RePEC books 39,086 4,449
12% RePEc journal articles 1,785,335 193,994
12% PubMed keyword search: cancer- last 2 years – free fulltext 153,875 16,026
11% BASE # content providers 6,732 694
11% Internet Archive webpages (in billions) 345 35
11% RePEC online (fulltext) (downloadable as of March 2012) 2,528,831 249,692
11% PubMed keyword search: cancer- last 5 years – free fulltext 391,691 37,230
10% arXiv  http://arxiv.org/  1,482,864 140,139
10% OpenDOAR http://www.opendoar.org/ # repositories 3,799 335
9% RePEC chapters 51,278 4,360
9% PMC journals selected articles 4,908 414
8% RePEc working papers 858,360 64,235
8% Total Policies (ROARMAP) 960 71
8% PubMed keyword search: cancer – free fulltext 1,027,541 75,655
7% PMC journals immediate free acccess 1,964 132
7% DOAJ # countries 129 8
7% PubMed keyword search: cancer – last year – all results 184,024 11,341
6% PMC journals deposit all articles 2,217 124
6% Elektronische Zeitschriftenbibliotek – Electronic Journals Library  # journals that can be read free of charge 62,681 3,441
5% PubMed keyword search: cancer – last 5 years – all results 839,960 43,565
5% PMC journals actively participating 2,578 132
5% PubMed keyword search: cancer – all results 3,784,638 192,126
5% PubMed keyword search: cancer – last 2 years – all results 357,370 17,970
4% RePEc software components 4,206 178
4% Internet Archive live music (concerts) 192,534 7,534
3% PMC journals all articles OA 1,529 51
3% ROAR # repositories 4,735 138
2% PMC journals NIH portfolio 335 6
-12% Internet Archive images 3,247,253 -452,747

Full data can be downloaded from the Dramatic Growth of Open Access dataverse: https://hdl.handle.net/10864/10660. This post is part of the Dramatic Growth of Open Access series. From 2004 – June 30, 2018 the series was posted on a quarterly basis. As of September 30, 2018, I continue to gather data quarterly but plan to release the series less frequently, most likely on an annual basis.

2018: best year yet for net growth of open access

The March 31, 2019 full data is available for download here

Highlights: this edition of the Dramatic Growth of Open Access features charts that illustrate that 2018 showed the strongest growth to date for open access by number of documents searchable through BASE, PubMedCentral, arXiv, DOAJ, texts added to Internet Archive, and journals added to DOAJ.

A Bielefeld Academic Search Engine (BASE) search encompasses over 19 million more items at the end of 2018 – about 60% or 11.4 million are open access. This brings the total documents searchable through BASE to close to 140 million (about 84 million open access)

PubMedCentral added 600,000 items in 2018, and surpassed a milestone of 5 millions items this year (now 5.2 million items)

arXiv added 140,000 items in 2018, bringing the total close to 1.5 million items.

The DOAJ article search grew by more than 800,000 articles in 2018, bringing the total number of articles searchable through DOAJ to about 3.6 million.

2018 was also the best year to date for DOAJ net journal growth. 1,707 journals were added for a current total of over 12,000 journals. Negative growth in 2016 illustrates the impact of the DOAJ weeding / re-application process.

4.5 million more texts are available through Internet Archive, bringing the total close to 20 million.

The following table provides data on total number of items as of December 31, 2018, growth in 2018 by number and percentage, in descending order by growth in percent. In interpreting percentage growth, consider total and numeric growth. bioRxiv nearly doubled in size this year, indicating a fairly new but healthy and rapidly growing service; but this reflects growth of about 20 thousand documents, a small fraction of the 600,000 items added by PMC for a 13% growth rate.

2018 growth (percent) 2018 total 2018 growth (number)
110% bioRxiv # articles  39,570 20,748
74% Internet Archives software 346,320 147,320
39% SCOAP3 # article 25,163 7,121
30% Internet Archive texts 19,570,789 4,570,789
30% DOAJ searchable articles 3,624,154 832,453
29% Internet Archive audio (recordings) 4,909,271 1,109,271
28% DOAB # books 13,253 2,938
25% Internet Archive collections 389,778 76,778
24% Internet Archive videos (movies) 4,701,129 901,129
21% DOAJ journals searchable at article level 9,479 1,670
16% PubMed keyword search: cancer- last year – free fulltext 65,766 9,154
16% DOAJ # journals 12,434 1,707
16% BASE # documents 139,476,029 19,092,606
16% Internet Archives television 1,733,000 233,000
15% DOAB # publishers 285 38
14% PMC journals some articles OA 758 94
13% PMC # items 5,200,000 600,000
13% RePEC books 39,086 4,449
12% RePEc journal articles 1,785,335 193,994
12% PubMed keyword search: cancer- last 2 years – free fulltext 153,875 16,026
11% BASE # content providers 6,732 694
11% Internet Archive webpages (in billions) 345 35
11% RePEC online (fulltext) (downloadable as of March 2012) 2,528,831 249,692
11% PubMed keyword search: cancer- last 5 years – free fulltext 391,691 37,230
10% arXiv  http://arxiv.org/  1,482,864 140,139
10% OpenDOAR http://www.opendoar.org/ # repositories 3,799 335
9% RePEC chapters 51,278 4,360
9% PMC journals selected articles 4,908 414
8% RePEc working papers 858,360 64,235
8% Total Policies (ROARMAP) 960 71
8% PubMed keyword search: cancer – free fulltext 1,027,541 75,655
7% PMC journals immediate free acccess 1,964 132
7% DOAJ # countries 129 8
7% PubMed keyword search: cancer – last year – all results 184,024 11,341
6% PMC journals deposit all articles 2,217 124
6% Elektronische Zeitschriftenbibliotek – Electronic Journals Library  # journals that can be read free of charge 62,681 3,441
5% PubMed keyword search: cancer – last 5 years – all results 839,960 43,565
5% PMC journals actively participating 2,578 132
5% PubMed keyword search: cancer – all results 3,784,638 192,126
5% PubMed keyword search: cancer – last 2 years – all results 357,370 17,970
4% RePEc software components 4,206 178
4% Internet Archive live music (concerts) 192,534 7,534
3% PMC journals all articles OA 1,529 51
3% ROAR # repositories 4,735 138
2% PMC journals NIH portfolio 335 6
-12% Internet Archive images 3,247,253 -452,747

Full data can be downloaded from the Dramatic Growth of Open Access dataverse: https://hdl.handle.net/10864/10660. This post is part of the Dramatic Growth of Open Access series. From 2004 – June 30, 2018 the series was posted on a quarterly basis. As of September 30, 2018, I continue to gather data quarterly but plan to release the series less frequently, most likely on an annual basis.

Dramatic Growth of Open Access June 2018

Congratulations to DOAJ for recently surpassing a milestone of over 3 million articles searchable at the article level!

The outstanding growth story by percentage for the second quarter of 2018 was bioRxiv. From March 31 – June 30, bioRxiv grew by 5,290 articles for a total of 28,070 articles, a growth rate of 23% for this quarter and 129% (more than doubled) over the past year.

38 of the limited set of indicators that I track had growth rates this quarter of 2% or more, equivalent of 8% annual growth, more than double the base rate of growth of scholarly journals and articles of 3 – 3.5% (de Solla Price, 1963; Mabe & Amin, 2001).

My best guesstimates of “how much open access there is” are based on the meta-search tool BASE (the Bielefeld Academic Search Engine). BASE harvests metadata from repositories and open access journals using OAI-PMH. BASE now contains over 130 million documents from 6,444 sources. About 60% are open access; collectively, the OA movement now makes available about 78 million open access documents. This quarter, BASE grew by over 13 million documents for a quarterly growth rate of 11%.

The Internet Archive as usual showed robust growth in a number of services – software components grew by 11% this quarter for a total of just over 230,000; audio recordings grew by 8% and are now over 8.8 million; collections also grew by 8% and are now over 325,000; close to a million texts were added this quarter for a growth rate of 6% and a total of over 16.5 million texts; there are close to 200,000 more videos for a growth rate of 5%; webpages and television each grew by 3%. There was a decrease in the number of images this quarter, down 18% or close to 700,000 images (does anyone know why? – if so please comment), in contrast with the annual growth for images from last year of 115% (more than double).

For OA publishing, this quarter SCOAP3 grew by 1,772 documents or 9%. The Directory of Open Access Books added 826 books and 17 publishers, 7% growth this quarter for both indicators. RePEC added over 2,000 books for a quarterly growth rate of 6% (journal articles and total downloadable items each grew by 2%). DOAJ added about 7 new titles per day  this quarter for a total net growth of 624 journals, a growth rate of 6%; DOAJ also by 6% in the number of journals and articles searchable at the article level, and as noted above, DOAJ surpassed a milestone of over 3 million articles searchable at the article level. DOAJ also added 4 countries this quarter.

A PubMed keyword search for “cancer” limited to the last year returned 5% more free fulltext this quarter. However, the same search with no date limit resulted in a slight (1%) decrease in free fulltext (does anyone know why? If so please comment). The same search with date limits of 5 years or 2 years result in a 2% increase in free fulltext. The number of items in PubMedCentral grew by 4% this quarter, adding 200,000 items for a total of 4.9 million (watch for the 5 million milestone coming soon). PMC journal participation grew by 2% this quarter on several indicators: the number of journals actively participating in PMC, the number of journals providing immediate free access, the number of journals depositing all content in PMC, and the number of journals that deposit some content in PMC.

arXiv grew by 3%; ROARMAP OA policy listings by 2%, as did the total number of journals that can be read free of charge listed by the Electronic Journals Library.

Congratulations and thank you to every one of the thousands of journals, repositories, publishers, and related services, and the millions of authors choosing to make your work open access.  Please accept my apologies for not tracking everyone, due to my human limitations. I encourage everyone to applaud and celebrate your own, and your neighbour’s, accomplishments and milestones – and share them with everyone in the OA movement by joining the OATP tag team.

To download the data go to the DGOA dataverse.

This post is part of the Dramatic Growth of Open Access series.

References

Mabe, M., & Amin, M. (2001). Growth dynamics of scholarly and scientific journals. Scientometrics, 51(1), 147-162.
Price, D. J. d. S. (1963). Little science, big science. New York: Columbia University Press.

Dramatic Growth of Open Access June 2018

Congratulations to DOAJ for recently surpassing a milestone of over 3 million articles searchable at the article level!

The outstanding growth story by percentage for the second quarter of 2018 was bioRxiv. From March 31 – June 30, bioRxiv grew by 5,290 articles for a total of 28,070 articles, a growth rate of 23% for this quarter and 129% (more than doubled) over the past year.

38 of the limited set of indicators that I track had growth rates this quarter of 2% or more, equivalent of 8% annual growth, more than double the base rate of growth of scholarly journals and articles of 3 – 3.5% (de Solla Price, 1963; Mabe & Amin, 2001).

My best guesstimates of “how much open access there is” are based on the meta-search tool BASE (the Bielefeld Academic Search Engine). BASE harvests metadata from repositories and open access journals using OAI-PMH. BASE now contains over 130 million documents from 6,444 sources. About 60% are open access; collectively, the OA movement now makes available about 78 million open access documents. This quarter, BASE grew by over 13 million documents for a quarterly growth rate of 11%.

The Internet Archive as usual showed robust growth in a number of services – software components grew by 11% this quarter for a total of just over 230,000; audio recordings grew by 8% and are now over 8.8 million; collections also grew by 8% and are now over 325,000; close to a million texts were added this quarter for a growth rate of 6% and a total of over 16.5 million texts; there are close to 200,000 more videos for a growth rate of 5%; webpages and television each grew by 3%. There was a decrease in the number of images this quarter, down 18% or close to 700,000 images (does anyone know why? – if so please comment), in contrast with the annual growth for images from last year of 115% (more than double).

For OA publishing, this quarter SCOAP3 grew by 1,772 documents or 9%. The Directory of Open Access Books added 826 books and 17 publishers, 7% growth this quarter for both indicators. RePEC added over 2,000 books for a quarterly growth rate of 6% (journal articles and total downloadable items each grew by 2%). DOAJ added about 7 new titles per day  this quarter for a total net growth of 624 journals, a growth rate of 6%; DOAJ also by 6% in the number of journals and articles searchable at the article level, and as noted above, DOAJ surpassed a milestone of over 3 million articles searchable at the article level. DOAJ also added 4 countries this quarter.

A PubMed keyword search for “cancer” limited to the last year returned 5% more free fulltext this quarter. However, the same search with no date limit resulted in a slight (1%) decrease in free fulltext (does anyone know why? If so please comment). The same search with date limits of 5 years or 2 years result in a 2% increase in free fulltext. The number of items in PubMedCentral grew by 4% this quarter, adding 200,000 items for a total of 4.9 million (watch for the 5 million milestone coming soon). PMC journal participation grew by 2% this quarter on several indicators: the number of journals actively participating in PMC, the number of journals providing immediate free access, the number of journals depositing all content in PMC, and the number of journals that deposit some content in PMC.

arXiv grew by 3%; ROARMAP OA policy listings by 2%, as did the total number of journals that can be read free of charge listed by the Electronic Journals Library.

Congratulations and thank you to every one of the thousands of journals, repositories, publishers, and related services, and the millions of authors choosing to make your work open access.  Please accept my apologies for not tracking everyone, due to my human limitations. I encourage everyone to applaud and celebrate your own, and your neighbour’s, accomplishments and milestones – and share them with everyone in the OA movement by joining the OATP tag team.

To download the data go to the DGOA dataverse.

This post is part of the Dramatic Growth of Open Access series.

References

Mabe, M., & Amin, M. (2001). Growth dynamics of scholarly and scientific journals. Scientometrics, 51(1), 147-162.
Price, D. J. d. S. (1963). Little science, big science. New York: Columbia University Press.

Dramatic Growth of Open Access March 2018

As usual open access is showing strong growth in many directions; more open access archives, documents, journals, articles, and books. This quarter focuses on the large number of indicators of growth beyond the usual background growth of scholarly journals and articles of 3 – 3.5% per year. Newcomer bioRxiv, with 21% growth this quarter (equivalent to 84% annual growth) is far above this background growth. This quarter, DOAJ added a net total of 378 journals, or more than 4 journals per day, for a total of 11,105 journals. The number of journals searchable at the article level has increased by 236 for a total of 8,045 journals. The number of articles searchable at the article level is just under 3 million.  The number of documents searchable through BASE grew by 3.5 million for a total of just under 24 million (about 60% of these, over 14 million, are open access). BASE added 121 content providers for a total of over 600 content providers. The percentage of PubMed records for a search for “cancer” that retrieve full-text is 27% overall, with a high of 45% for records published in the last 5 years. The percentage of full-text retrieval is rising at a steady rate.

The overall growth rate for scholarly articles and journals has been fairly steady over the past few centuries, in the range of 3 – 3.5% growth annually (Price, 1963; Mabe & Amin, 2001). As noted in the following chart, in the past quarter alone there have been 43 indicators of growth above that level, at least 1% in the quarter (equivalent of 4% annually). 
 

Quarterly growth percentage Item 03/31/18 Quarterly growth numeric
21% bioRxiv articles 22,780 3,958
13% DOAB books 11,685 1,370
10% SCOAP3 article 19,778 1,736
9% Internet Archive Video 4,128,556 328,556
8% Internet Archive Collections 338,578 25,578
8% Internet Archive Recordings 4,094,506 294,506
7% Internet Archive Television 1,607,000 107,000
7% DOAJ # of articles searchable at article level 2,984,612 192,911
6% DOAB # publishers 261 14
5% PubMed keyword search: cancer- last year – free fulltext 59,695 3,083
5% Internet Archive Texts 15,760,271 760,271
5% RePEC chapters 49,294 2,376
5% Internet Archive Webpages (billions) 325 15
4% Internet Archive Images 3,865,878 165,878
4% RePEc journal articles 1,659,120 67,779
4% PubMed keyword search: cancer- last 5 years – free fulltext 367,509 13,048
4% Internet Archive Software 206,098 7,098
4% DOAJ # journals 11,105 378
3% PubMed keyword search: cancer- last 2 years – free fulltext 142,572 4,723
3% RePEC downloadable articles 2,354,480 75,341
3% ROARMAP # OA policies 916 27
3% DOAJ # articles searchable at article level 8,045 236
3% PubMed keyword search: cancer – free fulltext 980,174 28,288
3% BASE # documents 123,932,954 3,549,531
3% PMC journals with some articles open access 682 18
2% DOAJ # countries 124 3
2% arXiv  articles 1,375,438 32,713
2% PMC select deposit journals 4,588 94
2% BASE # content providers 6,159 121
2% RePEC books 35,263 626
2% PubMed keyword search: cancer – last 5 years – all results 810,024 13,629
2% RePEc working papers 807,624 13,499
2% OpenDOAR # repositories 3,517 53
2% Elektronische Zeitschriftenbibliotek – # journals that can be read free of charge  60,129 889
1% chapters (OECD ilibrary) 60,300 840
1% PubMed keyword search: cancer – all results 3,639,629 47,117
1% PMC journals with immediate free access 1,852 20
1% ROAR # repositories 4,643 46
1% RePEc software components 4,068 40
1% OECD ilibrary tables and graphs  175,500 1,650
1% PMC actively participating journals 2,466 20
1% OECD ilibrary working papers  5,600 40
1% PMC journals that submit all articles 2,108 15

References

 
Mabe, M., & Amin, M. (2001). Growth dynamics of scholarly and scientific journals. Scientometrics, 51(1), 147-162.
Price, D. J. d. S. (1963). Little science, big science. New York: Columbia University Press.
This post is part of the Dramatic Growth of Open Access series.  Full data can be downloaded from here.

Dramatic Growth of Open Access March 2018

As usual open access is showing strong growth in many directions; more open access archives, documents, journals, articles, and books. This quarter focuses on the large number of indicators of growth beyond the usual background growth of scholarly journals and articles of 3 – 3.5% per year. Newcomer bioRxiv, with 21% growth this quarter (equivalent to 84% annual growth) is far above this background growth. This quarter, DOAJ added a net total of 378 journals, or more than 4 journals per day, for a total of 11,105 journals. The number of journals searchable at the article level has increased by 236 for a total of 8,045 journals. The number of articles searchable at the article level is just under 3 million.  The number of documents searchable through BASE grew by 3.5 million for a total of just under 24 million (about 60% of these, over 14 million, are open access). BASE added 121 content providers for a total of over 600 content providers. The percentage of PubMed records for a search for “cancer” that retrieve full-text is 27% overall, with a high of 45% for records published in the last 5 years. The percentage of full-text retrieval is rising at a steady rate.

The overall growth rate for scholarly articles and journals has been fairly steady over the past few centuries, in the range of 3 – 3.5% growth annually (Price, 1963; Mabe & Amin, 2001). As noted in the following chart, in the past quarter alone there have been 43 indicators of growth above that level, at least 1% in the quarter (equivalent of 4% annually). 
 

Quarterly growth percentage Item 03/31/18 Quarterly growth numeric
21% bioRxiv articles 22,780 3,958
13% DOAB books 11,685 1,370
10% SCOAP3 article 19,778 1,736
9% Internet Archive Video 4,128,556 328,556
8% Internet Archive Collections 338,578 25,578
8% Internet Archive Recordings 4,094,506 294,506
7% Internet Archive Television 1,607,000 107,000
7% DOAJ # of articles searchable at article level 2,984,612 192,911
6% DOAB # publishers 261 14
5% PubMed keyword search: cancer- last year – free fulltext 59,695 3,083
5% Internet Archive Texts 15,760,271 760,271
5% RePEC chapters 49,294 2,376
5% Internet Archive Webpages (billions) 325 15
4% Internet Archive Images 3,865,878 165,878
4% RePEc journal articles 1,659,120 67,779
4% PubMed keyword search: cancer- last 5 years – free fulltext 367,509 13,048
4% Internet Archive Software 206,098 7,098
4% DOAJ # journals 11,105 378
3% PubMed keyword search: cancer- last 2 years – free fulltext 142,572 4,723
3% RePEC downloadable articles 2,354,480 75,341
3% ROARMAP # OA policies 916 27
3% DOAJ # articles searchable at article level 8,045 236
3% PubMed keyword search: cancer – free fulltext 980,174 28,288
3% BASE # documents 123,932,954 3,549,531
3% PMC journals with some articles open access 682 18
2% DOAJ # countries 124 3
2% arXiv  articles 1,375,438 32,713
2% PMC select deposit journals 4,588 94
2% BASE # content providers 6,159 121
2% RePEC books 35,263 626
2% PubMed keyword search: cancer – last 5 years – all results 810,024 13,629
2% RePEc working papers 807,624 13,499
2% OpenDOAR # repositories 3,517 53
2% Elektronische Zeitschriftenbibliotek – # journals that can be read free of charge  60,129 889
1% chapters (OECD ilibrary) 60,300 840
1% PubMed keyword search: cancer – all results 3,639,629 47,117
1% PMC journals with immediate free access 1,852 20
1% ROAR # repositories 4,643 46
1% RePEc software components 4,068 40
1% OECD ilibrary tables and graphs  175,500 1,650
1% PMC actively participating journals 2,466 20
1% OECD ilibrary working papers  5,600 40
1% PMC journals that submit all articles 2,108 15

References

 
Mabe, M., & Amin, M. (2001). Growth dynamics of scholarly and scientific journals. Scientometrics, 51(1), 147-162.
Price, D. J. d. S. (1963). Little science, big science. New York: Columbia University Press.
This post is part of the Dramatic Growth of Open Access series.  Full data can be downloaded from here.