Quarter	Persons
1998-01-01	20069200
1998-04-01	20305400
1998-07-01	20581500
1998-10-01	20527900
1999-01-01	20333600
1999-04-01	20553900
1999-07-01	20822400
1999-10-01	20796500
2000-01-01	20558100
2000-04-01	20876500
2000-07-01	21262700
2000-10-01	21378600
2001-01-01	21212200
2001-04-01	21305500
2001-07-01	21639900
2001-10-01	21624000
2002-01-01	21575800
2002-04-01	21695700
2002-07-01	21914600
2002-10-01	21867800
2003-01-01	21756500
2003-04-01	21995500
2003-07-01	22160300
2003-10-01	22064700
2004-01-01	22013000
2004-04-01	22364300
2004-07-01	22424300
2004-10-01	22452600
2005-01-01	22204100
2005-04-01	22456000
2005-07-01	22330600
2005-10-01	22455300
2006-01-01	22492800
2006-04-01	22900800
2006-07-01	22721400
2006-10-01	22724500
2007-01-01	22483100
2007-04-01	22911700
2007-07-01	23023700
2007-10-01	22965800
2008-01-01	22813100
2008-04-01	23218500
2008-07-01	23150600
2008-10-01	22974100
2009-01-01	22603400
2009-04-01	22838300
2009-07-01	22630300
2009-10-01	22526000
2010-01-01	22371700
2010-04-01	22602700
2010-07-01	22393900
2010-10-01	22521200
2011-01-01	22485300
2011-04-01	22656600
2011-07-01	22520600
2011-10-01	22519500
2012-01-01	22374500
2012-04-01	22647300
2012-07-01	22555900
2012-10-01	22465400
2013-01-01	22073600
2013-04-01	22163800
2013-07-01	22142100
2013-10-01	22165100
2014-01-01	21970700
2014-04-01	22249700
2014-07-01	22324900
2014-10-01	22298900
2015-01-01	22094300
2015-04-01	22431700
2015-07-01	22574300
2015-10-01	22479300
2016-01-01	22321900
2016-04-01	22855500
2016-07-01	22798800
2016-10-01	22735300
2017-01-01	22660600
2017-04-01	23017800
2017-07-01	23105200
2017-10-01	23017000
2018-01-01	22805900
2018-04-01	23398400