Quarterly Persons
1999-01-01 17247400
1999-04-01 17298000
1999-07-01 17332100
1999-10-01 17355000
2000-01-01 17415200
2000-04-01 17470800
2000-07-01 17533000
2000-10-01 17582100
2001-01-01 17633200
2001-04-01 17690300
2001-07-01 17751800
2001-10-01 17810100
2002-01-01 17920600
2002-04-01 17995600
2002-07-01 18059300
2002-10-01 18134500
2003-01-01 18208400
2003-04-01 18289200
2003-07-01 18356200
2003-10-01 18426800
2004-01-01 18472600
2004-04-01 18549200
2004-07-01 18608900
2004-10-01 18693000
2005-01-01 18771400
2005-04-01 18838700
2005-07-01 18895100
2005-10-01 18977800
2006-01-01 19038500
2006-04-01 19100100
2006-07-01 19167600
2006-10-01 19268500
2007-01-01 19347100
2007-04-01 19424000
2007-07-01 19508800
2007-10-01 19599400
2008-01-01 19659600
2008-04-01 19705800
2008-07-01 19777000
2008-10-01 19829600
2009-01-01 19848900
2009-04-01 19866600
2009-07-01 19888500
2009-10-01 19917000
2010-01-01 19925500
2010-04-01 19941200
2010-07-01 19946700
2010-10-01 19988100
2011-01-01 20001400
2011-04-01 20015200
2011-07-01 20026900
2011-10-01 20051100
2012-01-01 20037700
2012-04-01 20029500
2012-07-01 20030800
2012-10-01 20028000
2013-01-01 20010500
2013-04-01 19996500
2013-07-01 19972900
2013-10-01 19958500
2014-01-01 19936000
2014-04-01 19957700
2014-07-01 19955300
2014-10-01 19953600
2015-01-01 19969500
2015-04-01 19954900
2015-07-01 19952500
2015-10-01 19963700
2016-01-01 19971300
2016-04-01 19983600
2016-07-01 20006700
2016-10-01 20040000
2017-01-01 20055000
2017-04-01 20074200
2017-07-01 20088400
2017-10-01 20120100
2018-01-01 20159000
2018-04-01 20200900
2018-07-01 20232800