Year Persons 1999-01-01 8875 2000-01-01 11650 2001-01-01 11525 2002-01-01 15350 2003-01-01 15025 2004-01-01 18725 2005-01-01 17550 2006-01-01 14050 2007-01-01 11725 2008-01-01 8975 2009-01-01 11050 2010-01-01 17500 2011-01-01 20400 2012-01-01 22175 2013-01-01 21550 2014-01-01 19875 2015-01-01 16875 2016-01-01 17700 2017-01-01 11875