Quarter	Persons, Seasonally Adjusted
1998-04-01	182500
1999-04-01	183300
2000-04-01	191900
2001-04-01	184100
2002-04-01	193400
2003-04-01	189500
2004-04-01	192200
2005-04-01	188600
2006-04-01	188200
2007-04-01	182200
2008-04-01	178300
2009-04-01	182700
2010-01-01	189900
2010-04-01	192000
2010-07-01	198900
2010-10-01	193700
2011-01-01	187300
2011-04-01	186600
2011-07-01	191600
2011-10-01	184900
2012-01-01	185000
2012-04-01	179500
2012-07-01	182800
2012-10-01	186800
2013-01-01	178800
2013-04-01	173300
2013-07-01	180200
2013-10-01	183800
2014-01-01	182000
2014-04-01	172000
2014-07-01	178600
2014-10-01	179100
2015-01-01	174700
2015-04-01	173300
2015-07-01	169000
2015-10-01	166300
2016-01-01	165700
2016-04-01	162500
2016-07-01	168900
2016-10-01	167200
2017-01-01	174500
2017-04-01	169800
2017-07-01	169500
2017-10-01	164900
2018-01-01	165900
2018-04-01	167300