Year Persons 2003-01-01 17600 2004-01-01 18300 2005-01-01 19100 2006-01-01 19700 2007-01-01 20800 2008-01-01 19475 2009-01-01 19500 2010-01-01 22050 2011-01-01 22400 2012-01-01 22725 2013-01-01 23225 2014-01-01 22600 2015-01-01 21375 2016-01-01 22750 2017-01-01 24675