Quarter	Persons
1999-04-01	17300
2000-04-01	17900
2001-04-01	17900
2002-04-01	17900
2003-01-01	17500
2003-04-01	17600
2003-07-01	18000
2003-10-01	17700
2004-01-01	17800
2004-04-01	17600
2004-07-01	18100
2004-10-01	17800
2005-01-01	17600
2005-04-01	17800
2005-07-01	17300
2005-10-01	17800
2006-01-01	17400
2006-04-01	18200
2006-07-01	18200
2006-10-01	18000
2007-01-01	18000
2007-04-01	18900
2007-07-01	18700
2007-10-01	18700
2008-01-01	18900
2008-04-01	19200
2008-07-01	19500
2008-10-01	19100
2009-01-01	19800
2009-04-01	19800
2009-07-01	19000
2009-10-01	19500
2010-01-01	19700
2010-04-01	19900
2010-07-01	19800
2010-10-01	20300
2011-01-01	19800
2011-04-01	20200
2011-07-01	19800
2011-10-01	19900
2012-01-01	19500
2012-04-01	19600
2012-07-01	19800
2012-10-01	19200
2013-01-01	19200
2013-04-01	19100
2013-07-01	19600
2013-10-01	20400
2014-01-01	20400
2014-04-01	19800
2014-07-01	19700
2014-10-01	19600
2015-01-01	19900
2015-04-01	20200
2015-07-01	19300
2015-10-01	19300
2016-01-01	18700
2016-04-01	18900
2016-07-01	18800
2016-10-01	19000
2017-01-01	19400
2017-04-01	19300
2017-07-01	18400
2017-10-01	18900
2018-01-01	18900
2018-04-01	19100