Year Persons 1999-01-01 21550 2000-01-01 18725 2001-01-01 19000 2002-01-01 17400 2003-01-01 17375 2004-01-01 17950 2005-01-01 17250 2006-01-01 14700 2007-01-01 10800 2008-01-01 11400 2009-01-01 13725 2010-01-01 14025 2011-01-01 13700 2012-01-01 15800 2013-01-01 15875 2014-01-01 14200 2015-01-01 11750 2016-01-01 10325 2017-01-01 8650