Quarter	Persons
1998-04-01	617500
1999-01-01	613800
1999-04-01	613800
1999-07-01	613800
1999-10-01	610200
2000-01-01	612300
2000-04-01	612300
2000-07-01	612300
2000-10-01	612300
2001-01-01	611100
2001-04-01	612000
2001-07-01	612000
2001-10-01	612000
2002-01-01	613300
2002-04-01	613300
2002-07-01	613300
2002-10-01	613300
2003-01-01	615300
2003-04-01	615300
2003-07-01	615300
2003-10-01	615300
2004-01-01	618300
2004-04-01	618300
2004-07-01	609500
2004-10-01	618300
2005-01-01	622100
2005-04-01	623000
2005-07-01	622700
2005-10-01	628100
2006-01-01	627300
2006-04-01	627900
2006-07-01	627700
2006-10-01	631400
2007-01-01	633400
2007-04-01	634400
2007-07-01	631900
2007-10-01	637700
2008-01-01	638800
2008-04-01	639900
2008-07-01	640700
2008-10-01	644400
2009-01-01	645400
2009-04-01	645700
2009-07-01	645000
2009-10-01	647300
2010-01-01	648400
2010-04-01	647900
2010-07-01	647900
2010-10-01	652600
2011-01-01	653000
2011-04-01	653000
2011-07-01	651700
2011-10-01	655200
2012-01-01	654800
2012-04-01	655300
2012-07-01	653200
2012-10-01	656300
2013-01-01	656100
2013-04-01	654100
2013-07-01	651700
2013-10-01	653800
2014-01-01	653300
2014-04-01	651700
2014-07-01	648700
2014-10-01	650800
2015-01-01	650000
2015-04-01	648400
2015-07-01	645600
2015-10-01	648600
2016-01-01	646400
2016-04-01	644100
2016-07-01	640700
2016-10-01	641800
2017-01-01	639000
2017-04-01	636900
2017-07-01	633600
2017-10-01	635100
2018-01-01	635100
2018-04-01	633700