Year Persons 2005-01-01 20496000 2006-01-01 18973000 2007-01-01 17706000 2008-01-01 19368000 2009-01-01 27850000 2010-01-01 28278000 2011-01-01 26467000 2012-01-01 26419000 2013-01-01 26495000 2014-01-01 24705000 2015-01-01 22916000 2016-01-01 21530000