Quarter	Persons
1998-04-01	21900
1999-04-01	20000
2000-04-01	19100
2001-04-01	20600
2002-04-01	21000
2003-01-01	23700
2003-04-01	20800
2003-07-01	20100
2003-10-01	24300
2004-01-01	24500
2004-04-01	22900
2004-07-01	23500
2004-10-01	25500
2005-01-01	23500
2005-04-01	21700
2005-07-01	23100
2005-10-01	23100
2006-01-01	23100
2006-04-01	21000
2006-07-01	22000
2006-10-01	24400
2007-01-01	23600
2007-04-01	21200
2007-07-01	22800
2007-10-01	25700
2008-01-01	26000
2008-04-01	23500
2008-07-01	24200
2008-10-01	25200
2009-01-01	27700
2009-04-01	25800
2009-07-01	24600
2009-10-01	25100
2010-01-01	26800
2010-04-01	23900
2010-07-01	25300
2010-10-01	26900
2011-01-01	27300
2011-04-01	22600
2011-07-01	25800
2011-10-01	29200
2012-01-01	27300
2012-04-01	22500
2012-07-01	25000
2012-10-01	26700
2013-01-01	27200
2013-04-01	23500
2013-07-01	24000
2013-10-01	25800
2014-01-01	27000
2014-04-01	22400
2014-07-01	23200
2014-10-01	24300
2015-01-01	24800
2015-04-01	21300
2015-07-01	23200
2015-10-01	23800
2016-01-01	25400
2016-04-01	21700
2016-07-01	22400
2016-10-01	24100
2017-01-01	24300
2017-04-01	23500
2017-07-01	25600
2017-10-01	25700
2018-01-01	27300
2018-04-01	25800