Year Persons 2000-01-01 16015300 2001-01-01 16116175 2002-01-01 16246300 2003-01-01 16204500 2004-01-01 16291200 2005-01-01 16356100 2006-01-01 19393725 2007-01-01 19352925 2008-01-01 19326850 2009-01-01 19345750 2010-01-01 18876925 2011-01-01 18886625 2012-01-01 18894300 2013-01-01 18884525