Jour­nal Cita­tion Reports (JCR) now has 10 years of jour­nal met­rics available:

Jour­nal Cita­tion Reports  (1999+)  (Sci­ence & Social Sci­ence Editions.)

From Infor­ma­tion ser­vices provider Thom­son Reuters, US, “JCR claims to be the most widely used tool for assess­ing the world’s lead­ing jour­nals. The met­rics it offers, includ­ing Jour­nal Impact Fac­tor, empower users to objec­tively eval­u­ate a journal’s per­for­mance and its influ­ence on research glob­ally.”  JCR ranks 9100 jour­nals from 2200 pub­lish­ers in 78 countries.

Source:  Knowl­edge­s­peak Newslet­ter, June 18, 2010