Quarter	Persons, Seasonally Adjusted
1999-01-01	571400
1999-04-01	581900
1999-07-01	574300
1999-10-01	566200
2000-01-01	584500
2000-04-01	590300
2000-07-01	584200
2000-10-01	574400
2001-01-01	577800
2001-04-01	582400
2001-07-01	577000
2001-10-01	584700
2002-01-01	606200
2002-04-01	604600
2002-07-01	604600
2002-10-01	589600
2003-01-01	609400
2003-04-01	614800
2003-07-01	615700
2003-10-01	619200
2004-01-01	606900
2004-04-01	613600
2004-07-01	613100
2004-10-01	625100
2005-01-01	626000
2005-04-01	633700
2005-07-01	630800
2005-10-01	633900
2006-01-01	631000
2006-04-01	638900
2006-07-01	648200
2006-10-01	648000
2007-01-01	659500
2007-04-01	663800
2007-07-01	679900
2007-10-01	680400
2008-01-01	674200
2008-04-01	686400
2008-07-01	683600
2008-10-01	675500
2009-01-01	683000
2009-04-01	680900
2009-07-01	684100
2009-10-01	684100
2010-01-01	694300
2010-04-01	697900
2010-07-01	698900
2010-10-01	706000
2011-01-01	705600
2011-04-01	702300
2011-07-01	701200
2011-10-01	684500
2012-01-01	698000
2012-04-01	705700
2012-07-01	708300
2012-10-01	702100
2013-01-01	705000
2013-04-01	730500
2013-07-01	725000
2013-10-01	734000
2014-01-01	735500
2014-04-01	738200
2014-07-01	741800
2014-10-01	745100
2015-01-01	759200
2015-04-01	771900
2015-07-01	770900
2015-10-01	772800
2016-01-01	768200
2016-04-01	799200
2016-07-01	805300
2016-10-01	809600
2017-01-01	820700
2017-04-01	839100
2017-07-01	856600
2017-10-01	865800
2018-01-01	873300
2018-04-01	881500