U.S. Census Bureau. (2005). U.S. Census Bureau, statistical abstract of the United States: 2004-2005. Vital statistics. (Section 2, Table 93, p. 72). Washington, DC: U.S. Census Bureau. Retrieved July 15, 2005, from http://www.census.gov/prod/www/statistical-abstract-2001_2005.html

"This section presents vital statistics data on births, deaths, abortions, fetal deaths, fertility, life expectancy, marriages, and divorces. Vital statistics are compiled for the country as a whole by the National Center for Health Statistics (NCHS) and published in its annual report, Vital Statistics of the United States, in certain reports of the Vital and Health Statistics series, and in the National Vital Statistics Reports (formerly Monthly Vital Statistics Report)."