JIF for 2010, try something like: http://www.google.com/search?q=impact+factor+2010+filetype%3Axls
JIF for 2009: http://www.ipac.ac.ru/impact/IF_2009.xls (Excel file)
JIF for 2008: http://www.kg.ac.rs/doc/sci_2008.pdf (pdf file)
JIFs for 2005: http://gezhi.org/wp-content/uploads/2006/06/2005%20SCI.zip (Excel file)
JIFs for 2003: http://molbiol.edu.ru/eng/journals/index.html
http://www.research.hbi.ir/impact/Journal%20Citation%20Report%20-%202003.htm
JIFs for 2002: http://www1.mengr.tamu.edu/NTFG/papers/Journal%20citation%20factor%202002.pdf#search=%22impact%20factor%202002%22 (pdf file)
JIFs for 2001: http://www.genebee.msu.su/journals/if01a.html
JIFs for 2000: http://www.fisio.icb.usp.br/posgraduacao/producao/impacto2000/Impacfactor2000.html
JIFs until 1999: http://www.ldeo.columbia.edu/~dery/if99.htm
Not really a JIF list, but almost more useful (2000 data): http://www.submithelp.de/
-if the links do not work
-if you have more recent data or websites to provide
-NOT to request JIF lists since I don't have anything more than this