Quarter	Persons
1998-01-01	18756000
1999-01-01	18805300
2000-01-01	18901800
2001-01-01	19016400
2002-01-01	19107900
2003-01-01	19435200
2003-04-01	19467000
2003-07-01	19526500
2003-10-01	19546000
2004-01-01	19564300
2004-04-01	19617700
2004-07-01	19667700
2004-10-01	19704000
2005-01-01	19753800
2005-04-01	19794200
2005-07-01	19847700
2005-10-01	19878300
2006-01-01	19921100
2006-04-01	19963200
2006-07-01	19996600
2006-10-01	20035300
2007-01-01	20064400
2007-04-01	20087400
2007-07-01	20110700
2007-10-01	20159300
2008-01-01	20167800
2008-04-01	20190600
2008-07-01	20193800
2008-10-01	20223100
2009-01-01	20238600
2009-04-01	20253600
2009-07-01	20264700
2009-10-01	20281700
2010-01-01	20301800
2010-04-01	20316000
2010-07-01	20321800
2010-10-01	20343200
2011-01-01	20349700
2011-04-01	20353400
2011-07-01	20338100
2011-10-01	20337400
2012-01-01	20330400
2012-04-01	20313800
2012-07-01	20301300
2012-10-01	20292500
2013-01-01	20299300
2013-04-01	20298500
2013-07-01	20292600
2013-10-01	20294400
2014-01-01	20907300
2014-04-01	20900400
2014-07-01	20897500
2014-10-01	20875600
2015-01-01	20851100
2015-04-01	20843800
2015-07-01	20846100
2015-10-01	20835000
2016-01-01	20824400
2016-04-01	20812000
2016-07-01	20818100
2016-10-01	20818700
2017-01-01	20866200
2017-04-01	20849300
2017-07-01	20853800
2017-10-01	20858700
2018-01-01	20872800
2018-04-01	20870400