Heather Morrison has posted a number of new statistics about open access publishing during Q1 2011. She also provides analysis.
You’ll find the material on her blog, The Imaginary Journal of Poetic Economics.
Here’s a taste of what’s in the post.
Number of open access journals (DOAJ): over 6,000. Growth rate: 4 per day.
Number of freely available journals (Electronic Journals Library): over 28,000. Growth rate: 10 per day.
Number of open access repositories: close to 2,000 (OpenDOAR). Growth rate: 1 per day.
Number of documents freely available (BASE): 25 million. Growth rate: 6,000 per day.
Number of open access mandate policies (ROARMAP): 271. Growth rate: 1 per week or 5 per month.
Number of world’s scholarly literature that is freely available: 20% (Bjork et al)