Quarterly Persons
2000-04-01 17475700
2001-04-01 17421000
2002-04-01 17553900
2003-04-01 17787200
2004-04-01 18113400
2005-01-01 18047600
2005-04-01 18124200
2005-07-01 18137700
2005-10-01 18261800
2006-01-01 18342300
2006-04-01 18380500
2006-07-01 18357000
2006-10-01 18574000
2007-01-01 18601700
2007-04-01 18664600
2007-07-01 18729200
2007-10-01 18910500
2008-01-01 18918700
2008-04-01 18988000
2008-07-01 19105700
2008-10-01 19168200
2009-01-01 19209900
2009-04-01 19295800
2009-07-01 19355200
2009-10-01 19407500
2010-01-01 19372200
2010-04-01 19530900
2010-07-01 19631800
2010-10-01 19738700
2011-01-01 19827500
2011-04-01 19941800
2011-07-01 19959700
2011-10-01 19941500
2012-01-01 20053700
2012-04-01 20087000
2012-07-01 20159800
2012-10-01 20191800
2013-01-01 20222700
2013-04-01 20276000
2013-07-01 20389100
2013-10-01 20434300
2014-01-01 20578100
2014-04-01 20607600
2014-07-01 20757700
2014-10-01 20735700
2015-01-01 20833700
2015-04-01 20914400
2015-07-01 20962300
2015-10-01 21021800
2016-01-01 21221400
2016-04-01 21306600
2016-07-01 21344900
2016-10-01 21333500
2017-01-01 21512000
2017-04-01 21610400
2017-07-01 21760800
2017-10-01 21730500
2018-01-01 21909700
2018-04-01 21999600