Status of Open Access as of March 31, 2013
Recent figures from major Open Access data providers in both green and gold, point to an increased growth as of 31st March 2013. The following sources map the global picture of the present status of Open Access and these include Open Access Scholarly Publishing Association statistics, Directory of Open Access Journals (DOAJ) statistics, Björk et al., and Gargouri et al studies, Peter Suber's analysis, and the comparative analysis of major service providers. The specific figures are given below;-
According to the data submitted by Open Access Scholarly Publishing Association (OASPA) members, a total of 252,418 articles were published with the CC-BY license until the end of 2012.
The Directory of Open Access Publishing (DOAJ) announced at the beginning of the April 2013, that more than 1 million articles are now searchable in DOAJ - which means more than 1 million article-level metadata entries are available for harvesting.
Open Access uptake between scientific disciplines
The two most relevant studies providing estimations for the uptake differences between disciplines are Björk et al., and Gargouri et al. In summary the graph below shows their comparisons of open access by disciplinary growth.
Analysis of major data providers
The graph below analysis the figures from major service providers with numbers showing open access growth by service and BASE repository has the highest number of records at 9,250,868 from March 2012 to March 2013.
The data sources for this graph are available here and was produced by Morrison Heather.