Quarter	Persons
1998-04-01	456100
1999-04-01	477600
2000-04-01	501300
2001-01-01	524000
2001-04-01	528400
2001-07-01	534500
2001-10-01	539400
2002-01-01	545500
2002-04-01	551200
2002-07-01	558800
2002-10-01	563200
2003-01-01	569500
2003-04-01	571600
2003-07-01	575400
2003-10-01	580700
2004-01-01	584400
2004-04-01	589600
2004-07-01	589800
2004-10-01	593000
2005-01-01	597100
2005-04-01	601400
2005-07-01	601700
2005-10-01	605900
2006-01-01	607600
2006-04-01	610000
2006-07-01	611700
2006-10-01	613700
2007-01-01	612400
2007-04-01	612500
2007-07-01	612500
2007-10-01	611600
2008-01-01	612700
2008-04-01	613400
2008-07-01	611000
2008-10-01	610200
2009-01-01	607800
2009-04-01	607100
2009-07-01	604500
2009-10-01	604200
2010-01-01	601500
2010-04-01	598600
2010-07-01	596100
2010-10-01	594200
2011-01-01	592800
2011-04-01	589300
2011-07-01	588500
2011-10-01	586900
2012-01-01	585300
2012-04-01	582000
2012-07-01	581300
2012-10-01	580600
2013-01-01	578700
2013-04-01	577800
2013-07-01	576600
2013-10-01	575300
2014-01-01	575200
2014-04-01	574500
2014-07-01	572200
2014-10-01	571200
2015-01-01	571800
2015-04-01	572900
2015-07-01	570700
2015-10-01	572500
2016-01-01	571200
2016-04-01	573100
2016-07-01	572300
2016-10-01	573200
2017-01-01	575600
2017-04-01	576300
2017-07-01	579800
2017-10-01	579000
2018-01-01	579800
2018-04-01	580600