Quarterly Persons
2005-01-01 18508938
2005-04-01 18364926
2005-07-01 18446896
2005-10-01 18612805
2006-01-01 18787442
2006-04-01 18787828
2006-07-01 19071225
2006-10-01 19102326
2007-01-01 19140012
2007-04-01 19179547
2007-07-01 19196709
2007-10-01 19319034
2008-01-01 19617712
2008-04-01 19763548
2008-07-01 19858522
2008-10-01 20028503
2009-01-01 20274798
2009-04-01 20359334
2009-07-01 20351246
2009-10-01 20394792
2010-01-01 20532054
2010-04-01 20620308
2010-07-01 20750652
2010-10-01 20887736
2011-01-01 21056333
2011-04-01 21076682
2011-07-01 21230933
2011-10-01 21199213
2012-01-01 21274380
2012-04-01 21435843
2012-07-01 21621437
2012-10-01 21620958
2013-01-01 21826583
2013-04-01 21942630
2013-07-01 21875108
2013-10-01 22066174
2014-01-01 22064810
2014-04-01 22053544
2014-07-01 22173212
2014-10-01 22220809
2015-01-01 22297934
2015-04-01 22438423
2015-07-01 22546253
2015-10-01 22739912
2016-01-01 22829836
2016-04-01 22853689
2016-07-01 22957742
2016-10-01 23089762
2017-01-01 23029915
2017-04-01 22995045
2017-07-01 23142868
2017-10-01 23244490
2018-01-01 23332928
2018-04-01 23532345