Quarter	Persons, Seasonally Adjusted
1998-01-01	547000
1998-04-01	552300
1998-07-01	549500
1998-10-01	534900
1999-01-01	554900
1999-04-01	561800
1999-07-01	557500
1999-10-01	548200
2000-01-01	565100
2000-04-01	571700
2000-07-01	566800
2000-10-01	555600
2001-01-01	560300
2001-04-01	567300
2001-07-01	556900
2001-10-01	564800
2002-01-01	584800
2002-04-01	583800
2002-07-01	582100
2002-10-01	567000
2003-01-01	588100
2003-04-01	588400
2003-07-01	590200
2003-10-01	587100
2004-01-01	578800
2004-04-01	579100
2004-07-01	577000
2004-10-01	588800
2005-01-01	591000
2005-04-01	596600
2005-07-01	589600
2005-10-01	593100
2006-01-01	589300
2006-04-01	600800
2006-07-01	609800
2006-10-01	604200
2007-01-01	617700
2007-04-01	618700
2007-07-01	637700
2007-10-01	634700
2008-01-01	625600
2008-04-01	638800
2008-07-01	642300
2008-10-01	633800
2009-01-01	636900
2009-04-01	630600
2009-07-01	625200
2009-10-01	630700
2010-01-01	634200
2010-04-01	636800
2010-07-01	635800
2010-10-01	641700
2011-01-01	634200
2011-04-01	620600
2011-07-01	626300
2011-10-01	609800
2012-01-01	616800
2012-04-01	616400
2012-07-01	619800
2012-10-01	602700
2013-01-01	605300
2013-04-01	626000
2013-07-01	629200
2013-10-01	637400
2014-01-01	635000
2014-04-01	640100
2014-07-01	648500
2014-10-01	637800
2015-01-01	652300
2015-04-01	679000
2015-07-01	678300
2015-10-01	682200
2016-01-01	678300
2016-04-01	708900
2016-07-01	724300
2016-10-01	721800
2017-01-01	738700
2017-04-01	770000
2017-07-01	786400
2017-10-01	798200
2018-01-01	806800
2018-04-01	824400