Year Persons 2005-01-01 16749000 2006-01-01 15722000 2007-01-01 14602000 2008-01-01 15186000 2009-01-01 19527000 2010-01-01 20498000 2011-01-01 20399000 2012-01-01 20940000 2013-01-01 20897000 2014-01-01 19825000 2015-01-01 18411000 2016-01-01 17493000