Year Persons 1998-01-01 322925 1999-01-01 317200 2000-01-01 323400 2001-01-01 322325 2002-01-01 326175 2003-01-01 331150 2004-01-01 320025 2005-01-01 320525 2006-01-01 328425 2007-01-01 339100 2008-01-01 343700 2009-01-01 343200 2010-01-01 339200 2011-01-01 333775 2012-01-01 322050 2013-01-01 336750 2014-01-01 342825 2015-01-01 355000 2016-01-01 373775 2017-01-01 406425