Quarter Persons, Seasonally Adjusted 2005-01-01 510466167.02305000 2005-04-01 512241254.19993200 2005-07-01 514887918.37754200 2005-10-01 516716852.80570596 2006-01-01 518743607.32143200 2006-04-01 521172550.66742605 2006-07-01 523802759.27811500 2006-10-01 526252862.15522800 2007-01-01 528051490.13404596 2007-04-01 529504234.94007500 2007-07-01 530659723.58852994 2007-10-01 532934930.95319800 2008-01-01 533969402.53947896 2008-04-01 534399957.14366800 2008-07-01 533389553.64192300 2008-10-01 531066469.96216390 2009-01-01 525611932.05833300 2009-04-01 522587043.84859500 2009-07-01 521706352.34890700 2009-10-01 521569088.19807196 2010-01-01 520806292.33348000 2010-04-01 522676423.54599100 2010-07-01 523575870.03502697 2010-10-01 523485379.11808395 2011-01-01 525603026.75495700 2011-04-01 526607547.83862793 2011-07-01 527183648.53151304 2011-10-01 528754807.30391100 2012-01-01 529491632.63829800 2012-04-01 531364742.77882606 2012-07-01 532012926.70747000 2012-10-01 532191382.16235700 2013-01-01 531894901.94173400 2013-04-01 533596506.21915400 2013-07-01 534284677.58034100 2013-10-01 535625741.10771203 2014-01-01 537735660.99143500 2014-04-01 539088562.75056300 2014-07-01 540452030.14986300 2014-10-01 542271292.73820510 2015-01-01 543948588.67633800 2015-04-01 545300286.93587600 2015-07-01 547182417.27275800 2015-10-01 549708008.21670510 2016-01-01 552143811.57475200 2016-04-01 553366564.89293000 2016-07-01 555166998.55391200 2016-10-01 556781697.59634900 2017-01-01 558578122.71114300 2017-04-01 560530329.68658300 2017-07-01 562691912.14947300 2017-10-01 564323636.50333300 2018-01-01 567211718.73384800 2018-04-01 568403042.44173400