Quarter	Persons
1998-01-01	20150700
1998-04-01	20357300
1998-07-01	20637900
1998-10-01	20594900
1999-01-01	20394800
1999-04-01	20617600
1999-07-01	20893400
1999-10-01	20860600
2000-01-01	20617200
2000-04-01	20930100
2000-07-01	21321600
2000-10-01	21450200
2001-01-01	21273100
2001-04-01	21373300
2001-07-01	21712900
2001-10-01	21698400
2002-01-01	21644400
2002-04-01	21756800
2002-07-01	21984000
2002-10-01	21931900
2003-01-01	21824000
2003-04-01	22057300
2003-07-01	22214800
2003-10-01	22120900
2004-01-01	22056400
2004-04-01	22411200
2004-07-01	22477500
2004-10-01	22505600
2005-01-01	22250700
2005-04-01	22499500
2005-07-01	22374700
2005-10-01	22503200
2006-01-01	22540100
2006-04-01	22953700
2006-07-01	22763800
2006-10-01	22772800
2007-01-01	22523400
2007-04-01	22961600
2007-07-01	23070000
2007-10-01	23022700
2008-01-01	22866300
2008-04-01	23270700
2008-07-01	23203900
2008-10-01	23020500
2009-01-01	22653100
2009-04-01	22887200
2009-07-01	22678100
2009-10-01	22576500
2010-01-01	22420700
2010-04-01	22656600
2010-07-01	22450100
2010-10-01	22580000
2011-01-01	22536500
2011-04-01	22712900
2011-07-01	22572200
2011-10-01	22571300
2012-01-01	22424200
2012-04-01	22702000
2012-07-01	22617000
2012-10-01	22520600
2013-01-01	22124500
2013-04-01	22218300
2013-07-01	22200500
2013-10-01	22218800
2014-01-01	22025700
2014-04-01	22316800
2014-07-01	22398300
2014-10-01	22374900
2015-01-01	22158400
2015-04-01	22496800
2015-07-01	22645100
2015-10-01	22558700
2016-01-01	22400800
2016-04-01	22935700
2016-07-01	22883900
2016-10-01	22811000
2017-01-01	22726500
2017-04-01	23089000
2017-07-01	23186700
2017-10-01	23089600
2018-01-01	22873600
2018-04-01	23476000