Data shown here are for calendar year 2008 and include the total number of prescription drugs filled at retail pharmacies only. Data are based on Vector One^(TM):National by Verispan, L.L.C., which collects data from a panel of retail pharmacies, third party payers, and data providers. Retail pharmacies include independent pharmacies, chain pharmacies, food stores, and mass merchandisers found in 814 defined regional zones. These data include prescriptions filled at pharmacies only and exclude those filled by mail order. Retail prescriptions filled by mail order totaled 238 million or 6.7% of total prescriptions filled in 2008 according to industry statistics reported by The National Association of Chain Drug Stores (http://www.nacds.org/wmspage.cfm?parm1=6536).

Calculations based on Vector One^(TM):National from Verispan, L.L.C.: Special Data Request, 2009 and U.S. Census Bureau, Annual Population Estimate, http://www.census.gov/popest/datasets.html.

Prescription Drugs or Rx Drugs: All products filled by retail pharmacies, including new prescriptions and refills of both brand name and generic drugs.