Year Persons 2005-01-01 21589000 2006-01-01 20415000 2007-01-01 19222000 2008-01-01 20786000 2009-01-01 28482000 2010-01-01 28861000 2011-01-01 27015000 2012-01-01 26165000 2013-01-01 25339000 2014-01-01 23045000 2015-01-01 21072000 2016-01-01 19960000