Year Persons 1998-01-01 4800 1999-01-01 4300 2000-01-01 4300 2001-01-01 3400 2002-01-01 5100 2003-01-01 7100 2004-01-01 10200 2005-01-01 9100 2006-01-01 9700 2007-01-01 8600 2008-01-01 10775 2009-01-01 11700 2010-01-01 10050 2011-01-01 11575 2012-01-01 12800 2013-01-01 14800 2014-01-01 15275 2015-01-01 18375 2016-01-01 17475 2017-01-01 15875