Quarter	Persons
1998-01-01	21645100
1998-04-01	21348000
1998-07-01	21179000
1998-10-01	21097600
1999-01-01	21317800
1999-04-01	21119000
1999-07-01	20972700
1999-10-01	21013700
2000-01-01	21215000
2000-04-01	21013500
2000-07-01	20780000
2000-10-01	20694100
2001-01-01	20873400
2001-04-01	20887600
2001-07-01	20651200
2001-10-01	20650400
2002-01-01	20722200
2002-04-01	20636200
2002-07-01	20526200
2002-10-01	20513700
2003-01-01	20588400
2003-04-01	20402900
2003-07-01	20394100
2003-10-01	20424700
2004-01-01	19885600
2004-04-01	19799000
2004-07-01	19958700
2004-10-01	19783600
2005-01-01	20087300
2005-04-01	20084000
2005-07-01	20372700
2005-10-01	20000100
2006-01-01	20131400
2006-04-01	19987800
2006-07-01	20305600
2006-10-01	20092700
2007-01-01	20505400
2007-04-01	20240400
2007-07-01	20208100
2007-10-01	20098600
2008-01-01	20222500
2008-04-01	19951400
2008-07-01	20246800
2008-10-01	20241100
2009-01-01	20466700
2009-04-01	20428800
2009-07-01	20687900
2009-10-01	20491800
2010-01-01	20546300
2010-04-01	20515600
2010-07-01	20970600
2010-10-01	20557300
2011-01-01	20640600
2011-04-01	20694900
2011-07-01	20888500
2011-10-01	20392200
2012-01-01	20204400
2012-04-01	20061600
2012-07-01	20407700
2012-10-01	20047400
2013-01-01	20210400
2013-04-01	20353600
2013-07-01	20619200
2013-10-01	20223400
2014-01-01	20211500
2014-04-01	20295900
2014-07-01	20322300
2014-10-01	19887700
2015-01-01	20174000
2015-04-01	20012200
2015-07-01	20255800
2015-10-01	19925800
2016-01-01	20004600
2016-04-01	19539900
2016-07-01	19750000
2016-10-01	19432300
2017-01-01	19507700
2017-04-01	19439600
2017-07-01	19420500
2017-10-01	19313800
2018-01-01	19419400
2018-04-01	19008500