Year Persons 1998-01-01 14950 1999-01-01 13100 2000-01-01 11750 2001-01-01 13550 2002-01-01 13625 2003-01-01 13525 2004-01-01 13725 2005-01-01 14100 2006-01-01 14375 2007-01-01 14700 2008-01-01 13175 2009-01-01 15800 2010-01-01 17325 2011-01-01 17825 2012-01-01 19100 2013-01-01 18775 2014-01-01 19025 2015-01-01 21175 2016-01-01 19375 2017-01-01 21200