Quarter	Persons
1999-01-01	17223400
1999-04-01	17304400
1999-07-01	17526800
1999-10-01	17648400
2000-01-01	17754400
2000-04-01	17909000
2000-07-01	18150000
2000-10-01	18235400
2001-01-01	17814300
2001-04-01	17931900
2001-07-01	18163500
2001-10-01	18291600
2002-01-01	18635000
2002-04-01	18870200
2002-07-01	19115100
2002-10-01	19224000
2003-01-01	19421200
2003-04-01	19639200
2003-07-01	19893500
2003-10-01	20017000
2004-01-01	20080000
2004-04-01	20266500
2004-07-01	20488900
2004-10-01	20667700
2005-01-01	20857400
2005-04-01	21129700
2005-07-01	21205600
2005-10-01	21369500
2006-01-01	21521300
2006-04-01	21726000
2006-07-01	21857800
2006-10-01	22014800
2007-01-01	22130800
2007-04-01	22354100
2007-07-01	22559600
2007-10-01	22659900
2008-01-01	22810400
2008-04-01	23032600
2008-07-01	23157100
2008-10-01	23262100
2009-01-01	23302600
2009-04-01	23293800
2009-07-01	23219800
2009-10-01	23225400
2010-01-01	23270500
2010-04-01	23406400
2010-07-01	23404400
2010-10-01	23377100
2011-01-01	23347300
2011-04-01	23466200
2011-07-01	23482500
2011-10-01	23440300
2012-01-01	23433000
2012-04-01	23489500
2012-07-01	23491900
2012-10-01	23360400
2013-01-01	23308400
2013-04-01	23207900
2013-07-01	23173400
2013-10-01	23070900
2014-01-01	22883900
2014-04-01	22975900
2014-07-01	22931700
2014-10-01	23026800
2015-01-01	22899400
2015-04-01	23015500
2015-07-01	22899500
2015-10-01	22873700
2016-01-01	22821000
2016-04-01	22875700
2016-07-01	22848300
2016-10-01	22745900
2017-01-01	22693300
2017-04-01	22727600
2017-07-01	22780900
2017-10-01	22765000
2018-01-01	22670300
2018-04-01	22834200
2018-07-01	22854000