OA by the numbers

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  • This is a list of numbers measuring the status or growth of open access.
  • The format is: Number. Date [last verified or updated]. Annotation. Please use links whenever possible so that users can verify and update the numbers.
  • Peter Suber started this list on Wikipedia in early 2005. Wikipedians deleted it twice and then chopped it into pieces. We restored it here on OAD, and have been expanding and updating it since 2008.
  • If these numbers don't tell the whole story, it's better to add new numbers to tell the rest of the story than to delete numbers already here.

OA journals (Gold OA)

  • 9,651. November 28, 2011. The number of OA journals listed in Open J-Gate. Note: as of February 5, 2013, the Open J-Gate website is inactive.
    • 6,502. December 12, 2011. The number of peer-reviewed OA journals listed in Open J-Gate.
    • 3,232. December 12, 2011. The number of non-peer-reviewed OA journals listed in Open J-Gate.
  • 38,483. February 5, 2013. The number of "free e-journals" (not all peer-reviewed) listed in EZB.
  • 602 / 695 / 68. February 5, 2013. Number of society publishers / OA journals / Creative Commons licensed according to the second edition of Society Publishers with Open Access Journals, edited by Caroline Sutton and Peter Suber.

OA repositories (Green OA)

  • 2,256. February 10, 2013. Number of OA, OAI-compliant repositories listed by OpenDOAR (Directory of Open Access Repositories).
  • 3,361. February 10, 2013. Number of OA, OAI-compliant repositories listed by ROAR (Registry of Open Access Repositories).
  • 3,946. February 10, 2013. Number of OA, OAI-compliant repositories listed by OpenArchive.edu.
  • 1,100 / 25,000,000 records. February 10, 2013. Numbers of OA, OAI-compliant contributors / records harvested (indexed and searched) by OAIster.
  • 1,269 / 38,354,066 records. February 10, 2012. Numbers of OA, OAI-compliant archives / publications harvested (indexed and searched) by ScientificCommons.org.
  • 820,179. February 10, 2013. Number of articles on deposit at arXiv. The number is posted on the upper left corner of the arXiv home page.
  • 2,600,000. February 10, 2013. Number of free full-text articles on deposit at PubMed Central.
    • 1217. February 10, 2013. Number of journals depositing all articles in PubMed Central.
    • 247. February 10, 2013. Number of journals depositing NIH-funded articles in PubMed Central.
  • 12,887,344 February 10, 2012. Total number of articles in Entrez PubMed with "Links to Full Text".

OA books

OA policies

  • 353. February 18, 2013. Total OA Mandates. ROARMAP.
    • 200. February 18, 2013. Number of research institutions mandating OA to their research output, according to ROARMAP.
    • 55. February 18, 2013. Number of funding agencies mandating OA to the research they fund, according to ROARMAP.
    • 98. February 18, 2013. Number of Thesis Mandates, according to ROARMAP.
  • Numbers related to the OA policy at the US National Institutes of Health (NIH):
    • 90,000. February 8, 2012. Number of peer-reviewed articles per year based on NIH-funded research and covered by the policy, according to an NIH update dated February 1, 2012.
    • 100 million. February 8, 2012. Number of dollars per year the NIH spends on page charges for grantee publications in subscription-based or non-OA journals, according to the September 11, 2008, Congressional testimony of NIH Director Elias Zerhouni (see p. 82).
    • 4 million. February 8, 2012. Number of dollars the NIH spent in Fiscal Year 2011 to implement its OA policy, according to the December 16, 2011, open letter from NIH Director Francis Collins to Rep. Joseph Pitts.
    • 100. February 18, 2013. Percentage of surveyed publishers willing to publish NIH-funded authors, according to the OAD list of publisher policies on NIH-funded authors. No surveyed publishers refuse to publish NIH-funded authors on account of its OA policy.
  • 63.2. November 29, 2011. Percentage of surveyed non-OA journals permitting authors to self-archive their postprints, according to Eprints statistics.
  • 94.9. November 29, 2011. Percentage of surveyed non-OA journals permitting authors to self-archive their preprints, postprints, or both, according to Eprints statistics.
  • 81. November 29, 2011. Percentage of authors who would "willingly" comply with a mandate from their funder or employer to self-archive their research articles, according to Alma Swan and Sheridan Brown, Open access self-archiving: An author study.
  • 104. February 18, 2013. Number of institutional members of the Alliance for Taxpayer Access. The ATA doesn't provide this number; users have to count the institutions listed.
  • 492. February 18, 2013. Number of signatories to the Research Without Walls pledge "to assist in the peer review process (as a reviewer, board/committee member, chair, editor, etc.) only for conferences, journals, and other publication venues that make all accepted publications available to the public for free via the web."
  • 13,281. February 18, 2013. Number of signatories to the Cost of Knowledge pledge or petition not to support Elsevier journals.

Journal pricing crisis

  • 273 / 73. Percentage increases in journal prices (serial unit cost) / inflation rate (consumer price index) from 1986 to 2004, according to OA ARL statistics.
  • 381 / 97. Percentage increases in journal prices (serial unit cost) / inflation rate (consumer price index) from 1986 to 2009, according to TA ARL Statistics, 2008. Research library trends tables and graphs. 7-21.
  • 238-537 / 65. Updated percentage increase comparison: data from the Library Journal Annual Periodicals Price Surveys showed that the increase in scholarly journal prices from 1990 to 2008 ranged from 238% (astronomy) to 537% (general science), which is 3.7 and 8.3 times the increase in the consumer price index, respectively. See here for details and data.
  • 56. Percentage of research institutions in the poorest countries (per-capita gross national product of less than $1,000/year) with no current subscriptions to international journals. According to Barbara Aronson in the New England Journal of Medicine, March 2004.
    • 34. Percent of institutions in countries in the next tier of poverty (per-capita GNP of $1,000 to $3,000/year) with no current subscriptions to international journals. Ibid.