Year Persons 2000-01-01 3975 2001-01-01 4175 2002-01-01 4350 2003-01-01 4600 2004-01-01 4975 2005-01-01 5875 2006-01-01 5350 2007-01-01 5775 2008-01-01 8300 2009-01-01 15925 2010-01-01 21800 2011-01-01 24600 2012-01-01 27150 2013-01-01 29500 2014-01-01 26950 2015-01-01 23000 2016-01-01 19775 2017-01-01 18475