Year Persons 2003-01-01 13800 2004-01-01 14100 2005-01-01 15200 2006-01-01 16400 2007-01-01 15750 2008-01-01 17100 2009-01-01 20050 2010-01-01 21425 2011-01-01 22125 2012-01-01 23875 2013-01-01 24575 2014-01-01 26550 2015-01-01 25750 2016-01-01 27575 2017-01-01 28400