Quarter	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