Quarter	Persons
1998-01-01	17804800
1998-04-01	18100700
1998-07-01	18118400
1998-10-01	18221300
1999-01-01	18200200
1999-04-01	18397700
1999-07-01	18444800
1999-10-01	18516500
2000-01-01	18486000
2000-04-01	18657500
2000-07-01	18783800
2000-10-01	18914300
2001-01-01	18970600
2001-04-01	19035400
2001-07-01	19152800
2001-10-01	19171200
2002-01-01	19231700
2002-04-01	19335600
2002-07-01	19323400
2002-10-01	19388000
2003-01-01	19373900
2003-04-01	19514400
2003-07-01	19437400
2003-10-01	19476500
2004-01-01	19507300
2004-04-01	19568600
2004-07-01	19483300
2004-10-01	19738000
2005-01-01	19621900
2005-04-01	19686900
2005-07-01	19470800
2005-10-01	19784300
2006-01-01	19765600
2006-04-01	19883100
2006-07-01	19585800
2006-10-01	19829100
2007-01-01	19543600
2007-04-01	19682900
2007-07-01	19705000
2007-10-01	19964000
2008-01-01	19948800
2008-04-01	20104600
2008-07-01	19883100
2008-10-01	20026500
2009-01-01	19851900
2009-04-01	19907900
2009-07-01	19698100
2009-10-01	19860100
2010-01-01	19769100
2010-04-01	19851700
2010-07-01	19518000
2010-10-01	19780200
2011-01-01	19711800
2011-04-01	19777400
2011-07-01	19531500
2011-10-01	19779400
2012-01-01	19933900
2012-04-01	20027600
2012-07-01	19704500
2012-10-01	20033200
2013-01-01	19967800
2013-04-01	19831700
2013-07-01	19484600
2013-10-01	19799800
2014-01-01	19816000
2014-04-01	19663100
2014-07-01	19482800
2014-10-01	19862900
2015-01-01	19590300
2015-04-01	19626000
2015-07-01	19347400
2015-10-01	19584800
2016-01-01	19440800
2016-04-01	19691800
2016-07-01	19441500
2016-10-01	19583100
2017-01-01	19518500
2017-04-01	19480700
2017-07-01	19350600
2017-10-01	19356800
2018-01-01	19221600
2018-04-01	19463600