Silver Book Fact
Even though the proportion of Americans using prescription drugs remained constant between 1996 and 2003, spending per person more than doubled from $424 to $950.
Zuvekas S, Cohen J. Prescription Drugs and the Changing Concentration of Health Care Expenditures. Health Aff. 2007; 26(1): 249-57. https://www.healthaffairs.org/doi/full/10.1377/hlthaff.26.1.249