Year Persons 1999-01-01 276400 2000-01-01 282950 2001-01-01 283950 2002-01-01 282325 2003-01-01 279700 2004-01-01 270050 2005-01-01 269350 2006-01-01 249950 2007-01-01 249775 2008-01-01 227225 2009-01-01 237550 2010-01-01 251850 2011-01-01 262625 2012-01-01 270500 2013-01-01 276050 2014-01-01 286525 2015-01-01 286475 2016-01-01 283575 2017-01-01 310975