Quarter	Persons, Seasonally Adjusted
1998-01-01	572000
1998-04-01	577200
1998-07-01	576000
1998-10-01	569500
1999-01-01	558300
1999-04-01	546000
1999-07-01	543000
1999-10-01	542600
2000-01-01	544400
2000-04-01	538100
2000-07-01	537200
2000-10-01	541700
2001-01-01	549900
2001-04-01	541400
2001-07-01	553800
2001-10-01	567900
2002-01-01	570000
2002-04-01	569900
2002-07-01	576000
2002-10-01	577300
2003-01-01	570200
2003-04-01	567900
2003-07-01	571100
2003-10-01	570400
2004-01-01	566400
2004-04-01	577100
2004-07-01	594100
2004-10-01	590600
2005-01-01	585800
2005-04-01	589800
2005-07-01	594500
2005-10-01	595300
2006-01-01	596500
2006-04-01	604600
2006-07-01	611100
2006-10-01	623200
2007-01-01	631800
2007-04-01	632100
2007-07-01	631000
2007-10-01	643200
2008-01-01	638000
2008-04-01	639900
2008-07-01	638800
2008-10-01	642900
2009-01-01	597200
2009-04-01	575300
2009-07-01	547200
2009-10-01	542100
2010-01-01	518500
2010-04-01	529500
2010-07-01	528500
2010-10-01	543300
2011-01-01	542400
2011-04-01	557100
2011-07-01	565800
2011-10-01	577600
2012-01-01	580400
2012-04-01	583100
2012-07-01	568400
2012-10-01	549400
2013-01-01	550900
2013-04-01	538400
2013-07-01	535100
2013-10-01	533500
2014-01-01	535400
2014-04-01	537400
2014-07-01	551600
2014-10-01	577300
2015-01-01	581300
2015-04-01	598600
2015-07-01	605700
2015-10-01	607600
2016-01-01	599000
2016-04-01	612400
2016-07-01	620700
2016-10-01	608900
2017-01-01	620000
2017-04-01	623400
2017-07-01	629300
2017-10-01	621600
2018-01-01	633100
2018-04-01	620400