Quarter	Persons, Seasonally Adjusted
1998-01-01	611500
1998-04-01	615500
1998-07-01	625200
1998-10-01	621000
1999-01-01	632100
1999-04-01	634700
1999-07-01	641100
1999-10-01	642600
2000-01-01	657400
2000-04-01	673100
2000-07-01	676800
2000-10-01	688100
2001-01-01	686800
2001-04-01	693000
2001-07-01	697700
2001-10-01	697900
2002-01-01	690400
2002-04-01	693900
2002-07-01	690300
2002-10-01	695600
2003-01-01	698600
2003-04-01	701300
2003-07-01	703600
2003-10-01	721800
2004-01-01	715300
2004-04-01	721600
2004-07-01	724200
2004-10-01	731200
2005-01-01	722300
2005-04-01	723500
2005-07-01	714500
2005-10-01	727000
2006-01-01	718000
2006-04-01	726900
2006-07-01	733800
2006-10-01	749500
2007-01-01	745200
2007-04-01	744700
2007-07-01	741000
2007-10-01	746700
2008-01-01	741200
2008-04-01	733400
2008-07-01	743200
2008-10-01	735900
2009-01-01	734000
2009-04-01	737100
2009-07-01	746300
2009-10-01	759900
2010-01-01	749500
2010-04-01	750600
2010-07-01	752800
2010-10-01	745200
2011-01-01	740800
2011-04-01	732300
2011-07-01	738500
2011-10-01	745400
2012-01-01	735800
2012-04-01	710100
2012-07-01	690000
2012-10-01	678800
2013-01-01	672600
2013-04-01	662200
2013-07-01	650300
2013-10-01	640700
2014-01-01	631400
2014-04-01	625600
2014-07-01	603100
2014-10-01	597100
2015-01-01	597800
2015-04-01	584100
2015-07-01	578900
2015-10-01	576200
2016-01-01	556600
2016-04-01	538700
2016-07-01	526700
2016-10-01	506800
2017-01-01	498000
2017-04-01	490800
2017-07-01	478500
2017-10-01	466700
2018-01-01	449700
2018-04-01	440700