消費支出調査(英:Consumer Expenditure Survey、CE) 人口動態調査(英:CurrentPopulationSurvey、CPS) アメリカ時間使用調査(英:The American Time Use SurveyATUS) 雇用統計(英:Current Employment Statistics、CES)
Census Bureau, Population Division (December 2012). December 22, 2012閲覧。 ^ Population: 1790 to 1990. US: census. http://www.census.gov/population/censusdata/table-16