Quarter	Persons
1999-01-01	17247400
1999-04-01	17298000
1999-07-01	17332100
1999-10-01	17355000
2000-01-01	17415200
2000-04-01	17470800
2000-07-01	17533000
2000-10-01	17582100
2001-01-01	17633200
2001-04-01	17690300
2001-07-01	17751800
2001-10-01	17810100
2002-01-01	17920600
2002-04-01	17995600
2002-07-01	18059300
2002-10-01	18134500
2003-01-01	18208400
2003-04-01	18289200
2003-07-01	18356200
2003-10-01	18426800
2004-01-01	18472600
2004-04-01	18549200
2004-07-01	18608900
2004-10-01	18693000
2005-01-01	18771400
2005-04-01	18838700
2005-07-01	18895100
2005-10-01	18977800
2006-01-01	19038500
2006-04-01	19100100
2006-07-01	19167600
2006-10-01	19268500
2007-01-01	19347100
2007-04-01	19424000
2007-07-01	19508800
2007-10-01	19599400
2008-01-01	19659600
2008-04-01	19705800
2008-07-01	19777000
2008-10-01	19829600
2009-01-01	19848900
2009-04-01	19866600
2009-07-01	19888500
2009-10-01	19917000
2010-01-01	19925500
2010-04-01	19941200
2010-07-01	19946700
2010-10-01	19988100
2011-01-01	20001400
2011-04-01	20015200
2011-07-01	20026900
2011-10-01	20051100
2012-01-01	20037700
2012-04-01	20029500
2012-07-01	20030800
2012-10-01	20028000
2013-01-01	20010500
2013-04-01	19996500
2013-07-01	19972900
2013-10-01	19958500
2014-01-01	19936000
2014-04-01	19957700
2014-07-01	19955300
2014-10-01	19953600
2015-01-01	19969500
2015-04-01	19954900
2015-07-01	19952500
2015-10-01	19963700
2016-01-01	19971300
2016-04-01	19983600
2016-07-01	20006700
2016-10-01	20040000
2017-01-01	20055000
2017-04-01	20074200
2017-07-01	20088400
2017-10-01	20120100
2018-01-01	20159000
2018-04-01	20200900
2018-07-01	20232800