Quarterly Persons
1999-04-01 17187900
2000-04-01 17221800
2001-04-01 17371400
2002-04-01 17458900
2003-04-01 17644100
2004-04-01 17578800
2005-01-01 18183500
2005-04-01 18112600
2005-07-01 18244200
2005-10-01 18301000
2006-01-01 18429600
2006-04-01 18484200
2006-07-01 18599500
2006-10-01 18636700
2007-01-01 18475000
2007-04-01 18594600
2007-07-01 18780300
2007-10-01 18866900
2008-01-01 18581400
2008-04-01 18550800
2008-07-01 18816400
2008-10-01 18927200
2009-01-01 18670000
2009-04-01 18734300
2009-07-01 18686300
2009-10-01 19099900
2010-01-01 18503800
2010-04-01 18475500
2010-07-01 18506100
2010-10-01 18664500
2011-01-01 18604000
2011-04-01 18704900
2011-07-01 18871800
2011-10-01 18893800
2012-01-01 18604200
2012-04-01 18780300
2012-07-01 18877600
2012-10-01 18913900
2013-01-01 18909900
2013-04-01 19013300
2013-07-01 19055000
2013-10-01 19035400
2014-01-01 19037100
2014-04-01 19084100
2014-07-01 19139600
2014-10-01 19173300
2015-01-01 19140800
2015-04-01 19159800
2015-07-01 19125900
2015-10-01 19338400
2016-01-01 19541000
2016-04-01 19391000
2016-07-01 19578000
2016-10-01 19621300
2017-01-01 19534600
2017-04-01 19412900
2017-07-01 19709000
2017-10-01 19702300
2018-01-01 19571300
2018-04-01 19399800