Year Persons 2003-01-01 12300 2004-01-01 12975 2005-01-01 13550 2006-01-01 14200 2007-01-01 14925 2008-01-01 15475 2009-01-01 15975 2010-01-01 16575 2011-01-01 17075 2012-01-01 17600 2013-01-01 18050 2014-01-01 18525 2015-01-01 18925 2016-01-01 19350 2017-01-01 19675