Bureau of Labor Statistics. (2003, August). Retirees by region. Retrieved February 2, 2007 from http://www.bls.gov/opud/ted/2003/aug/wk4/art02.htm

"These data are from the Consumer Expenditure Survey program. For more information see "Retirement expenditures for Whites, Blacks, and persons of Hispanic origin," Monthly Labor Review, June 2003. The data used in this article are from the Consumer Expenditure Interview Survey from the first quarter of 1996 through the first quarter of 2001. White means "White, non-Hispanic." Black means, "Black, non-Hispanic." The race/ethnic group of the consumer unit is determined by the reference person (the person responding to the survey). Similarly, only the reference person needs to be retired to qualify a husband-and-wife consumer unit as retired."