Quarter	Persons
1998-04-01	418600
1999-04-01	418400
2000-04-01	421000
2001-04-01	424400
2002-04-01	428200
2003-04-01	432800
2004-04-01	438800
2005-04-01	444200
2006-04-01	449300
2007-04-01	454400
2008-04-01	461600
2009-04-01	467700
2010-01-01	470300
2010-04-01	470000
2010-07-01	469900
2010-10-01	471000
2011-01-01	471900
2011-04-01	471600
2011-07-01	471500
2011-10-01	472600
2012-01-01	473900
2012-04-01	474100
2012-07-01	473400
2012-10-01	474100
2013-01-01	474800
2013-04-01	474000
2013-07-01	473200
2013-10-01	474300
2014-01-01	474100
2014-04-01	473900
2014-07-01	472700
2014-10-01	473300
2015-01-01	473300
2015-04-01	472400
2015-07-01	471100
2015-10-01	471500
2016-01-01	471200
2016-04-01	469800
2016-07-01	467600
2016-10-01	467100
2017-01-01	465900
2017-04-01	463900
2017-07-01	461100
2017-10-01	460700
2018-01-01	460400
2018-04-01	458300