Quarter	Persons
2003-04-01	20742000
2004-04-01	20758000
2005-01-01	19813000
2005-04-01	20801000
2005-07-01	21739000
2005-10-01	20848000
2006-01-01	20230000
2006-04-01	21264000
2006-07-01	22088000
2006-10-01	21002000
2007-01-01	20369000
2007-04-01	21211000
2007-07-01	21887000
2007-10-01	20739000
2008-01-01	19934000
2008-04-01	20947000
2008-07-01	21482000
2008-10-01	19876000
2009-01-01	18487000
2009-04-01	19072000
2009-07-01	19340000
2009-10-01	17849000
2010-01-01	17268000
2010-04-01	18316000
2010-07-01	19061000
2010-10-01	18111000
2011-01-01	17746000
2011-04-01	18601000
2011-07-01	19201000
2011-10-01	18422000
2012-01-01	17675000
2012-04-01	18629000
2012-07-01	19273000
2012-10-01	18436000
2013-01-01	17765000
2013-04-01	18578000
2013-07-01	19332000
2013-10-01	18375000
2014-01-01	17806000
2014-04-01	18784000
2014-07-01	19627000
2014-10-01	18845000
2015-01-01	18238000
2015-04-01	18924000
2015-07-01	19631000
2015-10-01	18894000
2016-01-01	18503000
2016-04-01	19390000
2016-07-01	19940000
2016-10-01	19251000
2017-01-01	18715000
2017-04-01	19714000