Quarter	Persons
1998-01-01	13900
1998-04-01	15400
1998-07-01	15700
1998-10-01	14800
1999-01-01	16000
1999-04-01	12800
1999-07-01	12100
1999-10-01	11500
2000-01-01	12200
2000-04-01	12300
2000-07-01	10700
2000-10-01	11800
2001-01-01	14700
2001-04-01	13300
2001-07-01	12800
2001-10-01	13400
2002-01-01	14000
2002-04-01	13600
2002-07-01	15000
2002-10-01	11900
2003-01-01	13500
2003-04-01	15200
2003-07-01	12600
2003-10-01	12800
2004-01-01	12800
2004-04-01	16800
2004-07-01	12200
2004-10-01	13100
2005-01-01	16500
2005-04-01	13000
2005-07-01	11200
2005-10-01	15700
2006-01-01	16900
2006-04-01	14000
2006-07-01	12900
2006-10-01	13700
2007-01-01	15800
2007-04-01	12700
2007-07-01	14800
2007-10-01	15500
2008-01-01	13900
2008-04-01	12700
2008-07-01	12700
2008-10-01	13400
2009-01-01	14600
2009-04-01	15400
2009-07-01	15600
2009-10-01	17600
2010-01-01	20100
2010-04-01	16800
2010-07-01	15800
2010-10-01	16600
2011-01-01	20300
2011-04-01	16000
2011-07-01	15300
2011-10-01	19700
2012-01-01	20500
2012-04-01	18700
2012-07-01	18700
2012-10-01	18500
2013-01-01	24300
2013-04-01	18800
2013-07-01	15000
2013-10-01	17000
2014-01-01	20200
2014-04-01	17500
2014-07-01	17700
2014-10-01	20700
2015-01-01	20700
2015-04-01	20000
2015-07-01	21100
2015-10-01	22900
2016-01-01	20900
2016-04-01	19500
2016-07-01	17900
2016-10-01	19200
2017-01-01	20700
2017-04-01	22700
2017-07-01	19600
2017-10-01	21800
2018-01-01	22000
2018-04-01	20700