Quarter	Persons
1998-04-01	27600
1999-04-01	24800
2000-04-01	25100
2001-04-01	25000
2002-04-01	23900
2003-01-01	22700
2003-04-01	23200
2003-07-01	23700
2003-10-01	22600
2004-01-01	23100
2004-04-01	23800
2004-07-01	23500
2004-10-01	22600
2005-01-01	20700
2005-04-01	24100
2005-07-01	23300
2005-10-01	21300
2006-01-01	20800
2006-04-01	22800
2006-07-01	21200
2006-10-01	21100
2007-01-01	20100
2007-04-01	20700
2007-07-01	22300
2007-10-01	20600
2008-01-01	19100
2008-04-01	21500
2008-07-01	21100
2008-10-01	19700
2009-01-01	19100
2009-04-01	20100
2009-07-01	20800
2009-10-01	19200
2010-01-01	16800
2010-04-01	19900
2010-07-01	20100
2010-10-01	19900
2011-01-01	17900
2011-04-01	19200
2011-07-01	21700
2011-10-01	21500
2012-01-01	19900
2012-04-01	20700
2012-07-01	20900
2012-10-01	20700
2013-01-01	19500
2013-04-01	20800
2013-07-01	22400
2013-10-01	21100