Quarter	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