Quarterly Persons
2000-04-01 308836000
2001-04-01 310515500
2002-04-01 312172200
2003-04-01 314227300
2004-04-01 315535300
2005-01-01 317238000
2005-04-01 317810900
2005-07-01 318352400
2005-10-01 318862400
2006-01-01 319260400
2006-04-01 319672500
2006-07-01 320007200
2006-10-01 320457500
2007-01-01 321087500
2007-04-01 321439900
2007-07-01 321930900
2007-10-01 322386000
2008-01-01 322792700
2008-04-01 323322500
2008-07-01 323565300
2008-10-01 323965800
2009-01-01 324251300
2009-04-01 324595200
2009-07-01 324590300
2009-10-01 324871700
2010-01-01 325212600
2010-04-01 325339300
2010-07-01 325580200
2010-10-01 325940200
2011-01-01 326188300
2011-04-01 326322700
2011-07-01 326568400
2011-10-01 327022700
2012-01-01 327231000
2012-04-01 327335400
2012-07-01 327609600
2012-10-01 327815200
2013-01-01 327647900
2013-04-01 327901800
2013-07-01 327964600