Quarter	Persons
1998-04-01	555600
1999-04-01	567400
2000-04-01	565500
2001-04-01	564900
2002-04-01	584500
2003-04-01	591500
2004-04-01	579900
2005-04-01	574500
2006-04-01	606400
2007-04-01	601800
2008-04-01	608500
2009-04-01	617100
2010-01-01	628600
2010-04-01	614700
2010-07-01	651300
2010-10-01	624000
2011-01-01	630200
2011-04-01	618700
2011-07-01	649600
2011-10-01	642300
2012-01-01	625400
2012-04-01	606300
2012-07-01	650200
2012-10-01	632200
2013-01-01	637200
2013-04-01	616100
2013-07-01	635900
2013-10-01	642100
2014-01-01	624900
2014-04-01	617100
2014-07-01	637600
2014-10-01	642400
2015-01-01	616400
2015-04-01	608100
2015-07-01	633700
2015-10-01	641500
2016-01-01	631000
2016-04-01	605600
2016-07-01	633000
2016-10-01	641000
2017-01-01	624100
2017-04-01	604200
2017-07-01	639500
2017-10-01	619500
2018-01-01	601300
2018-04-01	587100