Quarter	Persons
1999-04-01	618100
2000-01-01	625200
2000-04-01	626700
2000-07-01	632200
2000-10-01	634700
2001-01-01	623000
2001-04-01	624100
2001-07-01	630900
2001-10-01	631700
2002-01-01	624800
2002-04-01	624600
2002-07-01	623600
2002-10-01	623000
2003-01-01	622300
2003-04-01	622400
2003-07-01	623900
2003-10-01	623000
2004-01-01	622500
2004-04-01	623300
2004-07-01	622600
2004-10-01	622500
2005-01-01	623400
2005-04-01	622500
2005-07-01	624000
2005-10-01	624400
2006-01-01	622300
2006-04-01	620800
2006-07-01	623100
2006-10-01	624100
2007-01-01	619900
2007-04-01	619700
2007-07-01	620600
2007-10-01	621000
2008-01-01	618900
2008-04-01	619800
2008-07-01	620000
2008-10-01	619400
2009-01-01	616900
2009-04-01	616400
2009-07-01	616300
2009-10-01	617400
2010-01-01	614500
2010-04-01	614000
2010-07-01	612800
2010-10-01	612900
2011-01-01	609900
2011-04-01	610900
2011-07-01	610700
2011-10-01	609900
2012-01-01	606200
2012-04-01	606600
2012-07-01	606500
2012-10-01	606900
2013-01-01	602900
2013-04-01	602800
2013-07-01	602000
2013-10-01	602600
2014-01-01	599300
2014-04-01	599300
2014-07-01	598900
2014-10-01	599000
2015-01-01	596000
2015-04-01	596300
2015-07-01	596400
2015-10-01	595800
2016-01-01	595300
2016-04-01	595700
2016-07-01	595600
2016-10-01	595100
2017-01-01	593200
2017-04-01	593900
2017-07-01	593300
2017-10-01	593800
2018-01-01	593200
2018-04-01	593500