Quarter	Persons
1998-01-01	13500
1998-04-01	13400
1998-07-01	13300
1998-10-01	14900
1999-01-01	11100
1999-04-01	11900
1999-07-01	10000
1999-10-01	11200
2000-01-01	11200
2000-04-01	11000
2000-07-01	11700
2000-10-01	12300
2001-01-01	13200
2001-04-01	12600
2001-07-01	13900
2001-10-01	12800
2002-01-01	13000
2002-04-01	10100
2002-07-01	13600
2002-10-01	13300
2003-01-01	14300
2003-04-01	13500
2003-07-01	11800
2003-10-01	12400
2004-01-01	12600
2004-04-01	14400
2004-07-01	11800
2004-10-01	13600
2005-01-01	15700
2005-04-01	11300
2005-07-01	13200
2005-10-01	12000
2006-01-01	14400
2006-04-01	13700
2006-07-01	13500
2006-10-01	14800
2007-01-01	12600
2007-04-01	12400
2007-07-01	13700
2007-10-01	12500
2008-01-01	11000
2008-04-01	10600
2008-07-01	11200
2008-10-01	12600
2009-01-01	11500
2009-04-01	11300
2009-07-01	15100
2009-10-01	13400
2010-01-01	14900
2010-04-01	12900
2010-07-01	13400
2010-10-01	13700
2011-01-01	13900
2011-04-01	14900
2011-07-01	10900
2011-10-01	11300
2012-01-01	12100
2012-04-01	14300
2012-07-01	12500
2012-10-01	11600
2013-01-01	14700
2013-04-01	12900
2013-07-01	15800
2013-10-01	14900
2014-01-01	15300
2014-04-01	15300
2014-07-01	16200
2014-10-01	16300
2015-01-01	17200
2015-04-01	19700
2015-07-01	16200
2015-10-01	17600
2016-01-01	17600
2016-04-01	17000
2016-07-01	15700
2016-10-01	19600
2017-01-01	17900
2017-04-01	18300
2017-07-01	16800
2017-10-01	18100
2018-01-01	20000
2018-04-01	14600