Quarterly Persons
1999-04-01 20344800
2000-04-01 20393100
2001-04-01 20344500
2002-04-01 20077900
2003-04-01 19748600
2004-04-01 19475300
2005-01-01 19629200
2005-04-01 19872100
2005-07-01 20083500
2005-10-01 20129600
2006-01-01 19882100
2006-04-01 20209200
2006-07-01 20451500
2006-10-01 20651500
2007-01-01 20267100
2007-04-01 20635500
2007-07-01 20972500
2007-10-01 20947100
2008-01-01 20667900
2008-04-01 20810000
2008-07-01 21321200
2008-10-01 21147200
2009-01-01 20666100
2009-04-01 20661400
2009-07-01 20773100
2009-10-01 20960100
2010-01-01 20088100
2010-04-01 20289600
2010-07-01 20532000
2010-10-01 20575400
2011-01-01 20340900
2011-04-01 20678100
2011-07-01 20884100
2011-10-01 21050500
2012-01-01 20647600
2012-04-01 20850600
2012-07-01 21170300
2012-10-01 21120700
2013-01-01 20715800
2013-04-01 21075400
2013-07-01 21192500
2013-10-01 21260700
2014-01-01 20921700
2014-04-01 21105200
2014-07-01 21405500
2014-10-01 21405200
2015-01-01 21175800
2015-04-01 21130900
2015-07-01 21440900
2015-10-01 21662900
2016-01-01 21769800
2016-04-01 21761500
2016-07-01 22125600
2016-10-01 22165700
2017-01-01 21919500
2017-04-01 22002000
2017-07-01 22449800
2017-10-01 22312800
2018-01-01 22155000
2018-04-01 22108900