Table 1. Distribution of Health Care Expenses for the U.S. Population, by Percent of Total: Selected Years, 1977-2002 Research in Action, Issue 19 Percent of U.S. populationranked by expenses19771980198719962002Top 1 percent27%29%28%28%22%Top 5 percent55%55%56%56%49%Bottom 50 percent3%4%3%3%3%Sources: Berk ML, Monheit AC. The concentration of health expenditures: an update. Health Aff (Millwood) 1992 Winter; 145-9.Yu WW, Ezzati-Rice TM. Concentration of health care expenses in the U.S. civilian noninstitutionalized population. Statistical Brief #81. May 2005. Agency for Healthcare Research and Quality, Rockville, MD. Web site: http://meps.ahrq.gov/mepsweb/data_files/publications/st81/stat81.pdf. Accessed April 7, 2006.Return to Document Current as of June 2006 Internet Citation: Table 1. Distribution of Health Care Expenses for the U.S. Population, by Percent of Total: Selected Years, 1977-2002: Research in Action, Issue 19. June 2006. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/factsheets/costs/expriach/expriatab1.html