Quarter Persons, Seasonally Adjusted 1999-04-01 15685394.037477499 1999-07-01 15751805.903348101 1999-10-01 15762348.506393700 2000-01-01 15743700.332360200 2000-04-01 15786605.291077900 2000-07-01 15764614.176176699 2000-10-01 15774180.200385202 2001-01-01 15820035.448414200 2001-04-01 15766816.521771700 2001-07-01 15852142.506607500 2001-10-01 15871005.523206600 2002-01-01 15867291.704238000 2002-04-01 15873541.371644300 2002-07-01 15922992.015136700 2002-10-01 16010374.908981102 2003-01-01 16016107.986748701 2003-04-01 16053280.591041800 2003-07-01 16101430.426866600 2003-10-01 16068880.995342901 2004-01-01 16117576.659383600 2004-04-01 16086900.889969600 2004-07-01 16121157.458757000 2004-10-01 16214164.991889800 2005-01-01 16273024.579459298 2005-04-01 16206452.602858000 2005-07-01 16276089.271650200 2005-10-01 16381233.546032500 2006-01-01 16429010.425268799 2006-04-01 16509868.791645698 2006-07-01 16615819.453471199 2006-10-01 16593001.329614399 2007-01-01 16608597.650729101 2007-04-01 16644577.450317800 2007-07-01 16696316.439027600 2007-10-01 16722108.459925500 2008-01-01 16811370.953282400 2008-04-01 16852882.773150400 2008-07-01 16866839.734489600 2008-10-01 16939906.539077602 2009-01-01 16958262.533187200 2009-04-01 16884167.281894702 2009-07-01 16856279.032899500 2009-10-01 16810591.152018600 2010-01-01 16820429.673221300 2010-04-01 16894098.903821200 2010-07-01 16989715.220797600 2010-10-01 17008856.202159800 2011-01-01 16993960.713168500 2011-04-01 17050950.681039500 2011-07-01 17005882.777504400 2011-10-01 17053805.828287700 2012-01-01 17066525.314310900 2012-04-01 17182719.700750800 2012-07-01 17197874.011847200 2012-10-01 17235780.973091100 2013-01-01 17188116.004723600 2013-04-01 17229989.000549900 2013-07-01 17308082.521303200 2013-10-01 17328112.473423302 2014-01-01 17343552.071383500 2014-04-01 17341770.652851700 2014-07-01 17368805.810911600 2014-10-01 17334371.464853200 2015-01-01 17424985.009965400 2015-04-01 17403373.658731400 2015-07-01 17483077.469419700 2015-10-01 17573663.861883600 2016-01-01 17623098.714177800 2016-04-01 17623418.935360402 2016-07-01 17612641.773506400 2016-10-01 17606440.576955500 2017-01-01 17674473.176631800 2017-04-01 17700792.335359200 2017-07-01 17585460.645404298 2017-10-01 17651673.842604700 2018-01-01 17750655.445000300 2018-04-01 17734260.041094400