Year Persons 1998-01-01 5600 1999-01-01 6875 2000-01-01 7400 2001-01-01 8500 2002-01-01 8450 2003-01-01 10300 2004-01-01 13300 2005-01-01 14750 2006-01-01 14000 2007-01-01 12750 2008-01-01 12550 2009-01-01 16575 2010-01-01 19075 2011-01-01 17425 2012-01-01 18925 2013-01-01 21050 2014-01-01 18325 2015-01-01 16700 2016-01-01 13625 2017-01-01 10650