CrossRef Indicators
Updated January 27, 2009
Total no. participating publishers & societies 2,699
% of non-profit publishers 64%
Total no. participating libraries 1,454
No. journals covered 21,933
No. DOIs registered to date 35,146,270
No. DOIs deposited in previous month 472,037
No. DOIs retrieved (matched references) in previous month 15,578,632
DOI resolutions (end-user clicks) in previous month 21,225,295
The latest stats on CrossRef activity have been posted at
http://www.crossref.org/01company/crossref_indicators.html