Quarterly Persons
1999-04-01 23398300
2000-04-01 23742800
2001-04-01 23668100
2002-04-01 23776500
2003-04-01 23709100
2004-04-01 23939100
2005-01-01 23127600
2005-04-01 23035000
2005-07-01 23005000
2005-10-01 22990900
2006-01-01 22798200
2006-04-01 22717000
2006-07-01 22554800
2006-10-01 22294000
2007-01-01 22686600
2007-04-01 22594500
2007-07-01 22192100
2007-10-01 22132500
2008-01-01 22459500
2008-04-01 22552900
2008-07-01 22024400
2008-10-01 22048300
2009-01-01 22300600
2009-04-01 22231500
2009-07-01 21890600
2009-10-01 21528800
2010-01-01 21366900
2010-04-01 21304700
2010-07-01 21053400
2010-10-01 20936100
2011-01-01 20738700
2011-04-01 20360000
2011-07-01 20137400
2011-10-01 20104900
2012-01-01 20522300
2012-04-01 20322300
2012-07-01 19894900
2012-10-01 20009600
2013-01-01 20019900
2013-04-01 19776500
2013-07-01 19638900
2013-10-01 19710400
2014-01-01 19742100
2014-04-01 19673100
2014-07-01 19305300
2014-10-01 19437000
2015-01-01 19648200
2015-04-01 19706500
2015-07-01 19448600
2015-10-01 19342800
2016-01-01 19459000
2016-04-01 19477800
2016-07-01 18912100
2016-10-01 18871500
2017-01-01 19276500
2017-04-01 19073700
2017-07-01 18836100
2017-10-01 18585100
2018-01-01 19082000
2018-04-01 18992600