Quarter	Persons
1999-04-01	20152200
2000-04-01	20188000
2001-04-01	20135500
2002-04-01	19855900
2003-04-01	19529400
2004-04-01	19230400
2005-01-01	19319500
2005-04-01	19600200
2005-07-01	19804300
2005-10-01	19820100
2006-01-01	19587300
2006-04-01	19947800
2006-07-01	20152200
2006-10-01	20314400
2007-01-01	19945200
2007-04-01	20324500
2007-07-01	20631500
2007-10-01	20612200
2008-01-01	20314800
2008-04-01	20468500
2008-07-01	20959200
2008-10-01	20782200
2009-01-01	20316000
2009-04-01	20307700
2009-07-01	20395000
2009-10-01	20584500
2010-01-01	19752200
2010-04-01	19944000
2010-07-01	20167500
2010-10-01	20212800
2011-01-01	19951000
2011-04-01	20284800
2011-07-01	20486700
2011-10-01	20627400
2012-01-01	20228600
2012-04-01	20420300
2012-07-01	20716000
2012-10-01	20683100
2013-01-01	20289200
2013-04-01	20612000
2013-07-01	20668500
2013-10-01	20765800
2014-01-01	20469600
2014-04-01	20603200
2014-07-01	20872900
2014-10-01	20845300
2015-01-01	20664400
2015-04-01	20594900
2015-07-01	20871600
2015-10-01	21101600
2016-01-01	21211600
2016-04-01	21196500
2016-07-01	21533400
2016-10-01	21560200
2017-01-01	21335000
2017-04-01	21392300
2017-07-01	21814100
2017-10-01	21667400
2018-01-01	21495800
2018-04-01	21463600