Quarter	Persons
1999-04-01	18592100
1999-07-01	18629300
1999-10-01	18656900
2000-01-01	18685800
2000-04-01	18697400
2000-07-01	18728500
2000-10-01	18779800
2001-01-01	18784800
2001-04-01	18821400
2001-07-01	18877000
2001-10-01	18918000
2002-01-01	18944800
2002-04-01	18973100
2002-07-01	19025500
2002-10-01	19046800
2003-01-01	19073800
2003-04-01	19121600
2003-07-01	19150500
2003-10-01	19165500
2004-01-01	19199400
2004-04-01	19234500
2004-07-01	19287800
2004-10-01	19370400
2005-01-01	19382400
2005-04-01	19415000
2005-07-01	19474900
2005-10-01	19529800
2006-01-01	19579300
2006-04-01	19639100
2006-07-01	19683500
2006-10-01	19734700
2007-01-01	19754100
2007-04-01	19808700
2007-07-01	19866200
2007-10-01	19881200
2008-01-01	19919300
2008-04-01	19950900
2008-07-01	20001400
2008-10-01	20005500
2009-01-01	20043600
2009-04-01	20081000
2009-07-01	20105000
2009-10-01	20102500
2010-01-01	20157000
2010-04-01	20154100
2010-07-01	20206500
2010-10-01	20250400
2011-01-01	20304400
2011-04-01	20329300
2011-07-01	20306200
2011-10-01	20290100
2012-01-01	20288500
2012-04-01	20300800
2012-07-01	20322900
2012-10-01	20327700
2013-01-01	20307600
2013-04-01	20300900
2013-07-01	20324400
2013-10-01	20355600
2014-01-01	20368800
2014-04-01	20364400
2014-07-01	20410700
2014-10-01	20421200
2015-01-01	20445300
2015-04-01	20473800
2015-07-01	20531400
2015-10-01	20524000
2016-01-01	20533400
2016-04-01	20557700
2016-07-01	20609300
2016-10-01	20624900
2017-01-01	20655500
2017-04-01	20657200
2017-07-01	20657300
2017-10-01	20655700
2018-01-01	20674100
2018-04-01	20684800