Year Persons 2003-01-01 23050 2004-01-01 23250 2005-01-01 22350 2006-01-01 21475 2007-01-01 20925 2008-01-01 20350 2009-01-01 19800 2010-01-01 19175 2011-01-01 20075 2012-01-01 20550 2013-01-01 20950