Quarter Persons 2000-04-01 22586500 2001-04-01 22687900 2002-04-01 22314100 2003-04-01 21932200 2004-04-01 21637000 2005-01-01 21539600 2005-04-01 21732300 2005-07-01 22602600 2005-10-01 21987700 2006-01-01 21569500 2006-04-01 22069500 2006-07-01 23061400 2006-10-01 22284600 2007-01-01 22123300 2007-04-01 22524200 2007-07-01 23566000 2007-10-01 22780700 2008-01-01 22449300 2008-04-01 22524700 2008-07-01 23299800 2008-10-01 22111700 2009-01-01 21075100 2009-04-01 20832500 2009-07-01 21251600 2009-10-01 20328500 2010-01-01 19408400 2010-04-01 19626800 2010-07-01 20392500 2010-10-01 19530300 2011-01-01 18824800 2011-04-01 19198000 2011-07-01 19796700 2011-10-01 18967800 2012-01-01 18172300 2012-04-01 18506000 2012-07-01 19148600 2012-10-01 18368800 2013-01-01 17701300 2013-04-01 17965900 2013-07-01 18667900 2013-10-01 17966500 2014-01-01 17486000 2014-04-01 17922400 2014-07-01 18753300 2014-10-01 18122700 2015-01-01 17866300 2015-04-01 18016500 2015-07-01 18782300 2015-10-01 18336400 2016-01-01 18006100 2016-04-01 18394800 2016-07-01 19029300 2016-10-01 18580900 2017-01-01 18227800 2017-04-01 18698700 2017-07-01 19371700 2017-10-01 18896400 2018-01-01 18586700 2018-04-01 18908500