Quarter	Persons, Seasonally Adjusted
2005-01-01	39774000
2005-04-01	39882000
2005-07-01	40028000
2005-10-01	40227000
2006-01-01	40245000
2006-04-01	40348000
2006-07-01	40288000
2006-10-01	40449000
2007-01-01	40556000
2007-04-01	40254000
2007-07-01	40096000
2007-10-01	40187000
2008-01-01	39986000
2008-04-01	39872000
2008-07-01	39368000
2008-10-01	38750000
2009-01-01	37728000
2009-04-01	37097000
2009-07-01	36341000
2009-10-01	35631000
2010-01-01	35564000
2010-04-01	35533000
2010-07-01	35698000
2010-10-01	35571000
2011-01-01	35734000
2011-04-01	35737000
2011-07-01	35656000
2011-10-01	35827000
2012-01-01	35694000
2012-04-01	35862000
2012-07-01	35890000
2012-10-01	35911000
2013-01-01	35869000
2013-04-01	35899000
2013-07-01	36125000
2013-10-01	36117000
2014-01-01	36069000
2014-04-01	36387000
2014-07-01	36534000
2014-10-01	36722000
2015-01-01	36722000
2015-04-01	36631000
2015-07-01	36712000
2015-10-01	37016000
2016-01-01	37338000
2016-04-01	37239000
2016-07-01	37349000
2016-10-01	37486000
2017-01-01	37704000
2017-04-01	37789000