Kaiser Family Foundation calculations using NHE data from Centers for Medicare and Medicaid Services, Office of the Actuary, National Health Statistics Group, at http://www.cms.hhs.gov/NationalHealthExpendData/ (For 1993 & 2003 data, see Historical; National Health Expenditures by type of service and source of funds, CY 1960-2012; file nhe2012.zip. For 2013 & 2023 data, see Projected; NHE Historical and projections, 1965-2023, file nhe65-23.zip).