Quarter	Persons
1999-04-01	15800
2000-04-01	15400
2001-04-01	15900
2002-04-01	15500
2003-01-01	17400
2003-04-01	17400
2003-07-01	17400
2003-10-01	17400
2004-01-01	18100
2004-04-01	18100
2004-07-01	18100
2004-10-01	18100
2005-01-01	17700
2005-04-01	17700
2005-07-01	17700
2005-10-01	17700
2006-01-01	18200
2006-04-01	18200
2006-07-01	18200
2006-10-01	18200
2007-01-01	18300
2007-04-01	17500
2007-07-01	19200
2007-10-01	19900
2008-01-01	19100
2008-04-01	18300
2008-07-01	19100
2008-10-01	18900
2009-01-01	20600
2009-04-01	18200
2009-07-01	18700
2009-10-01	17900
2010-01-01	21500
2010-04-01	21600
2010-07-01	19700
2010-10-01	20600
2011-01-01	21600
2011-04-01	23200
2011-07-01	21700
2011-10-01	22300
2012-01-01	22100
2012-04-01	22600
2012-07-01	21800
2012-10-01	21000
2013-01-01	23300
2013-04-01	23300
2013-07-01	21000
2013-10-01	19500
2014-01-01	21400
2014-04-01	22900
2014-07-01	20800
2014-10-01	20000
2015-01-01	22100
2015-04-01	22200
2015-07-01	19400
2015-10-01	22100
2016-01-01	24700
2016-04-01	24300
2016-07-01	23500
2016-10-01	22600
2017-01-01	24600
2017-04-01	24400
2017-07-01	22600
2017-10-01	23900
2018-01-01	23400
2018-04-01	25000