The number of prescriptions dispensed in the US in 2009 increased 2.1% (from 3.8 billion to 3.9 billion), a larger growth rate than the 1.0% increase in 2008 over 2007. From 1999 to 2009, the number of prescriptions increased 39% (from 2.8 billion to 3.9 billion), compared to a US population growth of 9%. The average number of retail prescriptions per capita increased from 10.1 in 1999 to 12.6 in 2009.7http://www.kff.org/rxdrugs/upload/3057-08.pdf