Quarterly Persons
1999-04-01 17774400
1999-07-01 17471400
1999-10-01 17558500
2000-01-01 17756600
2000-04-01 17758600
2000-07-01 17519600
2000-10-01 17751500
2001-01-01 17914500
2001-04-01 18051100
2001-07-01 17805900
2001-10-01 17875100
2002-01-01 18109500
2002-04-01 18055800
2002-07-01 17870300
2002-10-01 17911300
2003-01-01 18141200
2003-04-01 18148600
2003-07-01 17953100
2003-10-01 18061900
2004-01-01 18169200
2004-04-01 18272400
2004-07-01 18168600
2004-10-01 18221300
2005-01-01 18244100
2005-04-01 18412000
2005-07-01 18199800
2005-10-01 18264700
2006-01-01 18323200
2006-04-01 18313500
2006-07-01 18089900
2006-10-01 18318900
2007-01-01 18528500
2007-04-01 18614800
2007-07-01 18409500
2007-10-01 18497900
2008-01-01 18587100
2008-04-01 18622500
2008-07-01 18467600
2008-10-01 18549400
2009-01-01 18692200
2009-04-01 18893000
2009-07-01 18708800
2009-10-01 18932800
2010-01-01 19186100
2010-04-01 19147500
2010-07-01 18841100
2010-10-01 19110200
2011-01-01 19253400
2011-04-01 19320500
2011-07-01 19157400
2011-10-01 19256600
2012-01-01 19420500
2012-04-01 19414500
2012-07-01 19165200
2012-10-01 19193400
2013-01-01 19399300
2013-04-01 19451100
2013-07-01 19169200
2013-10-01 19355200
2014-01-01 19438500
2014-04-01 19513500
2014-07-01 19329200
2014-10-01 19538700
2015-01-01 19539000
2015-04-01 19701300
2015-07-01 19477400
2015-10-01 19522300
2016-01-01 19636900
2016-04-01 19596000
2016-07-01 19466400
2016-10-01 19626300
2017-01-01 19732900
2017-04-01 19763100
2017-07-01 19687800
2017-10-01 19705400
2018-01-01 19731900
2018-04-01 19850100