Quarter Persons, Seasonally Adjusted 2007-01-01 16630070.876775600 2007-04-01 16822018.215606400 2007-07-01 17001450.051080800 2007-10-01 17260910.189870600 2008-01-01 17386822.688681000 2008-04-01 17276268.409548800 2008-07-01 17348719.991058700 2008-10-01 17109774.910711500 2009-01-01 17789163.120835400 2009-04-01 18207090.647151400 2009-07-01 18209280.391150900 2009-10-01 18560228.507528998 2010-01-01 18736874.795791500 2010-04-01 18823373.828129700 2010-07-01 19161570.781624500 2010-10-01 19166587.261121000 2011-01-01 19368893.238904500 2011-04-01 19485606.917421598 2011-07-01 19820625.994767200 2011-10-01 20202474.182240102 2012-01-01 20337344.904117900 2012-04-01 20422971.844697498 2012-07-01 20413842.104625500 2012-10-01 20413944.813225802 2013-01-01 20541977.522891298 2013-04-01 20686397.854918000 2013-07-01 20943171.680465200 2013-10-01 20969316.608392200 2014-01-01 20970524.033323000 2014-04-01 21166054.617556700 2014-07-01 21375605.756463300 2014-10-01 21487773.925990200 2015-01-01 21653796.529418502 2015-04-01 21740161.666468800 2015-07-01 21795034.354702998 2015-10-01 21989759.449409700 2016-01-01 21872287.981088698 2016-04-01 21914476.129010900 2016-07-01 21939917.952522100 2016-10-01 22106697.270711698 2017-01-01 22131711.951406800 2017-04-01 22245243.531221200 2017-07-01 22188605.601179300 2017-10-01 22163483.916192600 2018-01-01 22214715.521341500 2018-04-01 22347841.112591400