Quarter	Persons
1999-04-01	36400
2000-04-01	33700
2001-04-01	34700
2002-04-01	33200
2003-01-01	33900
2003-04-01	33900
2003-07-01	33900
2003-10-01	33900
2004-01-01	30000
2004-04-01	30000
2004-07-01	30000
2004-10-01	30000
2005-01-01	28300
2005-04-01	28300
2005-07-01	28300
2005-10-01	28300
2006-01-01	27100
2006-04-01	27100
2006-07-01	27100
2006-10-01	27100
2007-01-01	26600
2007-04-01	28800
2007-07-01	28200
2007-10-01	25300
2008-01-01	29100
2008-04-01	27900
2008-07-01	29000
2008-10-01	29400
2009-01-01	24600
2009-04-01	28500
2009-07-01	26900
2009-10-01	28800
2010-01-01	24700
2010-04-01	29100
2010-07-01	25600
2010-10-01	26400
2011-01-01	24200
2011-04-01	26200
2011-07-01	27200
2011-10-01	26300
2012-01-01	25400
2012-04-01	25400
2012-07-01	22800
2012-10-01	23900
2013-01-01	22600
2013-04-01	23800
2013-07-01	23400
2013-10-01	22700
2014-01-01	25200
2014-04-01	22800
2014-07-01	23700
2014-10-01	20600
2015-01-01	23200
2015-04-01	22300
2015-07-01	24700
2015-10-01	24000
2016-01-01	24600
2016-04-01	25600
2016-07-01	24900
2016-10-01	22600
2017-01-01	21300
2017-04-01	20900
2017-07-01	19400
2017-10-01	22800
2018-01-01	19200
2018-04-01	21200