Year Persons 2000-01-01 288300 2001-01-01 289750 2002-01-01 292100 2003-01-01 297675 2004-01-01 300775 2005-01-01 311275 2006-01-01 321975 2007-01-01 322725 2008-01-01 321725 2009-01-01 302600 2010-01-01 290425 2011-01-01 300475 2012-01-01 305525 2013-01-01 306600 2014-01-01 304775 2015-01-01 312925 2016-01-01 315250 2017-01-01 320800