Year Persons 1998-01-01 16465575 1999-01-01 16361325 2000-01-01 16296300 2001-01-01 16195050 2002-01-01 16129025 2003-01-01 16048800 2004-01-01 15695475 2005-01-01 15927450 2006-01-01 15969900 2007-01-01 16119500 2008-01-01 16069125 2009-01-01 16299025 2010-01-01 16400200 2011-01-01 16419375 2012-01-01 16136325 2013-01-01 16222200 2014-01-01 16162450 2015-01-01 16268900 2016-01-01 16075400 2017-01-01 15931450