Figures on the use of animals in laboratories are never up-to-date. The data is reported to the United States Department of Agriculture by the facilities using them, and then, eventually, the USDA reports to the public.

The numbers of monkeys represented in the graphs here come from multiple sources: The USDA/APHIS Animal Care Annual Report of Activities for Fiscal Year 2007, Appendix 1 (the most current data available; current numbers are likely higher.) USDA/APHIS annual reports for Covance and UW-Madison. And, The need for non-human primates in biomedical research, production and testing of products and devices. European Commission Scientific Committee on Health and Environmental Risks (SCHER), 2009.