Quarter	Persons
1998-04-01	160000
1999-04-01	161600
2000-04-01	162100
2001-04-01	164500
2002-04-01	165000
2003-01-01	168400
2003-04-01	168400
2003-07-01	168400
2003-10-01	168400
2004-01-01	170100
2004-04-01	170100
2004-07-01	170100
2004-10-01	170100
2005-01-01	172000
2005-04-01	172000
2005-07-01	172000
2005-10-01	172000
2006-01-01	171500
2006-04-01	171500
2006-07-01	171500
2006-10-01	171500
2007-01-01	176700
2007-04-01	174300
2007-07-01	175100
2007-10-01	176300
2008-01-01	177100
2008-04-01	179400
2008-07-01	177800
2008-10-01	179300
2009-01-01	183300
2009-04-01	185600
2009-07-01	186100
2009-10-01	188000
2010-01-01	189200
2010-04-01	189000
2010-07-01	189200
2010-10-01	190400
2011-01-01	193400
2011-04-01	195200
2011-07-01	193500
2011-10-01	197000
2012-01-01	199100
2012-04-01	199700
2012-07-01	199200
2012-10-01	200800
2013-01-01	203200
2013-04-01	202500
2013-07-01	197300
2013-10-01	201200
2014-01-01	205100
2014-04-01	204200
2014-07-01	202200
2014-10-01	204400
2015-01-01	209400
2015-04-01	209400
2015-07-01	209400
2015-10-01	209400
2016-01-01	214500
2016-04-01	214500
2016-07-01	214500
2016-10-01	214400
2017-01-01	226200
2017-04-01	223900
2017-07-01	220700
2017-10-01	220800
2018-01-01	225100
2018-04-01	225100