Year Persons 1999-01-01 20650 2000-01-01 15625 2001-01-01 16675 2002-01-01 15275 2003-01-01 18175 2004-01-01 18475 2005-01-01 18200 2006-01-01 17300 2007-01-01 17175 2008-01-01 17425 2009-01-01 31925 2010-01-01 37400 2011-01-01 36975 2012-01-01 33775 2013-01-01 31525 2014-01-01 30700 2015-01-01 26450 2016-01-01 31625 2017-01-01 26525