Quarter	Persons
1998-04-01	638200
1999-01-01	634100
1999-04-01	634100
1999-07-01	634100
1999-10-01	634600
2000-01-01	631700
2000-04-01	631700
2000-07-01	631700
2000-10-01	631700
2001-01-01	630400
2001-04-01	630800
2001-07-01	630800
2001-10-01	630800
2002-01-01	632800
2002-04-01	632800
2002-07-01	632800
2002-10-01	632800
2003-01-01	635200
2003-04-01	635200
2003-07-01	635200
2003-10-01	635200
2004-01-01	637700
2004-04-01	637700
2004-07-01	646500
2004-10-01	637700
2005-01-01	639700
2005-04-01	640500
2005-07-01	640800
2005-10-01	643500
2006-01-01	644100
2006-04-01	644900
2006-07-01	645100
2006-10-01	647600
2007-01-01	649300
2007-04-01	650300
2007-07-01	649100
2007-10-01	653600
2008-01-01	654800
2008-04-01	656100
2008-07-01	657000
2008-10-01	659300
2009-01-01	660700
2009-04-01	661500
2009-07-01	661700
2009-10-01	663700
2010-01-01	665000
2010-04-01	664900
2010-07-01	665300
2010-10-01	668400
2011-01-01	669100
2011-04-01	668900
2011-07-01	668600
2011-10-01	670700
2012-01-01	670500
2012-04-01	671300
2012-07-01	670500
2012-10-01	672800
2013-01-01	672800
2013-04-01	671300
2013-07-01	670300
2013-10-01	671600
2014-01-01	671200
2014-04-01	670000
2014-07-01	667800
2014-10-01	669400
2015-01-01	668700
2015-04-01	667500
2015-07-01	665500
2015-10-01	672600
2016-01-01	666200
2016-04-01	664200
2016-07-01	662200
2016-10-01	663100
2017-01-01	658800
2017-04-01	656600
2017-07-01	654200
2017-10-01	655600
2018-01-01	658000
2018-04-01	656500