Year Persons 1999-01-01 16625 2000-01-01 15025 2001-01-01 15800 2002-01-01 16450 2003-01-01 20800 2004-01-01 24575 2005-01-01 22800 2006-01-01 17325 2007-01-01 15200 2008-01-01 11425 2009-01-01 18250 2010-01-01 24325 2011-01-01 25675 2012-01-01 24675 2013-01-01 23200 2014-01-01 22150 2015-01-01 20475 2016-01-01 19900 2017-01-01 18775