Quarter	Persons
1998-04-01	405400
1999-04-01	404200
2000-04-01	405500
2001-04-01	409200
2002-04-01	415700
2003-04-01	420200
2004-04-01	426100
2005-04-01	430800
2006-04-01	434400
2007-04-01	438500
2008-04-01	444800
2009-04-01	449300
2010-01-01	454200
2010-04-01	454400
2010-07-01	453400
2010-10-01	454500
2011-01-01	455100
2011-04-01	454600
2011-07-01	454100
2011-10-01	455900
2012-01-01	456800
2012-04-01	456200
2012-07-01	455200
2012-10-01	456400
2013-01-01	457200
2013-04-01	456400
2013-07-01	455600
2013-10-01	456600
2014-01-01	456300
2014-04-01	455400
2014-07-01	454200
2014-10-01	454400
2015-01-01	455000
2015-04-01	454000
2015-07-01	452200
2015-10-01	452800
2016-01-01	452100
2016-04-01	450000
2016-07-01	447800
2016-10-01	447300
2017-01-01	446000
2017-04-01	443700
2017-07-01	440700
2017-10-01	440200
2018-01-01	439400
2018-04-01	437200