Year Persons 1998-01-01 147875 1999-01-01 167025 2000-01-01 170300 2001-01-01 167725 2002-01-01 163450 2003-01-01 161075 2004-01-01 157600 2005-01-01 160000 2006-01-01 164550 2007-01-01 168225 2008-01-01 168525 2009-01-01 158075 2010-01-01 158125 2011-01-01 160400 2012-01-01 163200 2013-01-01 161450 2014-01-01 162625 2015-01-01 158325 2016-01-01 158500 2017-01-01 160175