Quarter	Persons
1998-04-01	22200
1999-04-01	22900
2000-04-01	22100
2001-04-01	22000
2002-04-01	20700
2003-01-01	20100
2003-04-01	20100
2003-07-01	20100
2003-10-01	20100
2004-01-01	19000
2004-04-01	19000
2004-07-01	19000
2004-10-01	19000
2005-01-01	18100
2005-04-01	18100
2005-07-01	18100
2005-10-01	18100
2006-01-01	17600
2006-04-01	17600
2006-07-01	17600
2006-10-01	17600
2007-01-01	15900
2007-04-01	18600
2007-07-01	19500
2007-10-01	15300
2008-01-01	13900
2008-04-01	12600
2008-07-01	11700
2008-10-01	12900
2009-01-01	14200
2009-04-01	13500
2009-07-01	11700
2009-10-01	14400
2010-01-01	13200
2010-04-01	12700
2010-07-01	10700
2010-10-01	13200
2011-01-01	13200
2011-04-01	13700
2011-07-01	13000
2011-10-01	12300
2012-01-01	14000
2012-04-01	12700
2012-07-01	12000
2012-10-01	11500
2013-01-01	10900
2013-04-01	10200
2013-07-01	10400
2013-10-01	14900
2014-01-01	12800
2014-04-01	14700
2014-07-01	12700
2014-10-01	12700
2015-01-01	11200
2015-04-01	12700
2015-07-01	12300
2015-10-01	11100
2016-01-01	10900
2016-04-01	11800
2016-07-01	11600
2016-10-01	9900
2017-01-01	9600
2017-04-01	9000
2017-07-01	8900
2017-10-01	9400
2018-01-01	9800
2018-04-01	12600