The Dramatic Growth of Open Access is now available in an Open Data Edition. Complete data is now kept in the Open Data edition, while The Imaginary Journal of Poetic Economics edition focuses on commentary.
Open access continues to grow dramatically, both open access publishing and open access archiving.
Most notable this quarter are indicators of growth in open access archiving.
OAIster, a union catalog of digital resources provided by the University of Michigan, achieved an important milestone this quarter, exceeding the 10 million item mark. OAIster also features a new, more user-friendly search interface. More OAIster statistics, including impressive growth in search rates and the global distribution of OAIster repositories, are available. OAIster has added more than a million items, and 34 new repositories, just this quarter. Way to go, OAIster!!
The Registry of Open Repositories (ROAR) now includes 862 repositories, more than OAIster's 762. ROAR contains a wealth of statistical information and charts, although the author has not discovered an easy means of calculating the total number of items and/or fulltext in the ROAR repositories.
The Canadian Association of Research Libraries (CARL) Metadata Harvester grew by 20% this quarter (just under 5,000 items), for an amazing annual equivalent rate of 80%.
PubMedCentral and E-LIS each grew by 10% this quarter, for an annual equivalent of 40%. Highwire Press Free Online Articles was not far behind, with an 8% growth or annual equivalent of 32%.
The growth rate of the large, well-established archives (arXiv and RePEC) was lower, in percentage terms, as expected.
The Directory of Open Access Journals added 104 titles this quarter, a rate of more than 1 per calendar day. This is a slightly slower growth rate than last year's 1.5 per calendar day.
Previous issues of the Dramatic Growth of Open Access:
Early figures are from my preprint, The Dramatic Growth of Open Access: Implications and Opportunities for Resource Sharing, Journal of Interlibrary Loan, Document Delivery & Electronic Reserve, 16, 3 (2006), and my updates:
Dec. 31, 2005 Update and 2006 Predictions
March 31, 2006 Update.
June 30, 2006 Update.
September 2006 Update.
Dramatic Growth December 2006 & Predictions for 2007