Quarter	Persons
1998-01-01	619600
1998-04-01	626100
1998-07-01	625000
1998-10-01	634500
1999-01-01	637300
1999-04-01	638400
1999-07-01	636000
1999-10-01	638900
2000-01-01	638500
2000-04-01	641400
2000-07-01	638800
2000-10-01	643100
2001-01-01	636600
2001-04-01	637800
2001-07-01	633700
2001-10-01	633500
2002-01-01	632300
2002-04-01	634800
2002-07-01	631400
2002-10-01	631800
2003-01-01	631000
2003-04-01	632900
2003-07-01	631300
2003-10-01	629000
2004-01-01	627900
2004-04-01	628800
2004-07-01	628600
2004-10-01	630500
2005-01-01	630400
2005-04-01	632800
2005-07-01	630800
2005-10-01	636900
2006-01-01	631700
2006-04-01	632300
2006-07-01	632400
2006-10-01	637500
2007-01-01	637500
2007-04-01	641100
2007-07-01	636200
2007-10-01	637400
2008-01-01	636400
2008-04-01	637600
2008-07-01	635800
2008-10-01	639200
2009-01-01	638300
2009-04-01	641600
2009-07-01	638600
2009-10-01	638400
2010-01-01	640500
2010-04-01	642800
2010-07-01	640700
2010-10-01	642100
2011-01-01	640100
2011-04-01	642700
2011-07-01	637000
2011-10-01	637800
2012-01-01	639100
2012-04-01	641900
2012-07-01	641800
2012-10-01	642100
2013-01-01	639200
2013-04-01	639700
2013-07-01	635000
2013-10-01	638800
2014-01-01	634600
2014-04-01	633100
2014-07-01	633400
2014-10-01	630500
2015-01-01	624600
2015-04-01	627600
2015-07-01	621200
2015-10-01	622300
2016-01-01	620000
2016-04-01	619400
2016-07-01	617100
2016-10-01	619300
2017-01-01	616400
2017-04-01	612900
2017-07-01	609200
2017-10-01	607900
2018-01-01	605200
2018-04-01	602000