Quarter	Persons
1999-04-01	22251500
2000-04-01	22082400
2001-04-01	22060500
2002-04-01	21993200
2003-04-01	21990600
2004-04-01	21948300
2005-01-01	22313500
2005-04-01	22479600
2005-07-01	22608000
2005-10-01	22582200
2006-01-01	22507500
2006-04-01	22546400
2006-07-01	22646600
2006-10-01	22847800
2007-01-01	22443900
2007-04-01	22532300
2007-07-01	22844200
2007-10-01	22754700
2008-01-01	22549300
2008-04-01	22538100
2008-07-01	22869100
2008-10-01	22733900
2009-01-01	22572000
2009-04-01	22521400
2009-07-01	22608600
2009-10-01	22701100
2010-01-01	21960800
2010-04-01	21910000
2010-07-01	22069300
2010-10-01	22041000
2011-01-01	21877800
2011-04-01	22022000
2011-07-01	22159200
2011-10-01	22236900
2012-01-01	22024500
2012-04-01	22053700
2012-07-01	22377500
2012-10-01	22276400
2013-01-01	22091300
2013-04-01	22295700
2013-07-01	22378900
2013-10-01	22403200
2014-01-01	22232700
2014-04-01	22284700
2014-07-01	22540800
2014-10-01	22532400
2015-01-01	22404400
2015-04-01	22265700
2015-07-01	22511100
2015-10-01	22721100
2016-01-01	22878000
2016-04-01	22800200
2016-07-01	23123800
2016-10-01	23131800
2017-01-01	22968600
2017-04-01	22982200
2017-07-01	23369300
2017-10-01	23192300
2018-01-01	23114300
2018-04-01	23009400