Year Persons 1998-01-01 13775 1999-01-01 11050 2000-01-01 11550 2001-01-01 13125 2002-01-01 12500 2003-01-01 13000 2004-01-01 13100 2005-01-01 13050 2006-01-01 14100 2007-01-01 12800 2008-01-01 11350 2009-01-01 12825 2010-01-01 13725 2011-01-01 12750 2012-01-01 12625 2013-01-01 14575 2014-01-01 15775 2015-01-01 17675 2016-01-01 17475 2017-01-01 17775