Quarter	Persons
2000-04-01	19463900
2001-04-01	19322800
2002-04-01	19289700
2003-04-01	19345600
2004-04-01	19130400
2005-01-01	19242500
2005-04-01	19230300
2005-07-01	19097400
2005-10-01	19232700
2006-01-01	19103700
2006-04-01	19090300
2006-07-01	18986200
2006-10-01	19004200
2007-01-01	18959100
2007-04-01	18991000
2007-07-01	18803800
2007-10-01	18967400
2008-01-01	18929800
2008-04-01	18828600
2008-07-01	18738400
2008-10-01	18713600
2009-01-01	18794300
2009-04-01	18678100
2009-07-01	18569100
2009-10-01	18581700
2010-01-01	18373900
2010-04-01	18289900
2010-07-01	18246000
2010-10-01	18222600
2011-01-01	18115600
2011-04-01	18145600
2011-07-01	18062900
2011-10-01	18000000
2012-01-01	17969100
2012-04-01	17923200
2012-07-01	17816100
2012-10-01	17809900
2013-01-01	17794300
2013-04-01	17741600
2013-07-01	17653200
2013-10-01	17625200
2014-01-01	17735800
2014-04-01	17737500
2014-07-01	17624000
2014-10-01	17562600
2015-01-01	17637000
2015-04-01	17553800
2015-07-01	17385200
2015-10-01	17487600
2016-01-01	17499500
2016-04-01	17524300
2016-07-01	17413800
2016-10-01	17417700
2017-01-01	17441000
2017-04-01	17475200
2017-07-01	17334000
2017-10-01	17405500
2018-01-01	17471300
2018-04-01	17411900