Notes: Changes in the Current Population Survey’s (CPS) sample and questionnaire have been made over the years, which hamper the ability to trend data across years. Health insurance estimates for 1999 and later years that use the revised questionnaire cannot be compared with CPS estimates from earlier years. *Revised method estimates for 1999 shown in this exhibit are comparable to later years, except they are based on a smaller sample.

Source: Kaiser Family Foundation, Health Insurance Coverage in America, 2004 Data Update, November 2005, Figure 1, p.9, at http://www.kff.org/uninsured/7415.cfm prepared by the Kaiser Commission on Medicaid and the Uninsured, and the Urban Institute using data from the Census Bureau’s March Supplements to the Current Population Survey.