Year Persons 2005-01-01 21893000 2006-01-01 21817000 2007-01-01 21954000 2008-01-01 21961000 2009-01-01 21849000 2010-01-01 22000000 2011-01-01 22235000 2012-01-01 22186000 2013-01-01 21704000 2014-01-01 21355000 2015-01-01 21207000 2016-01-01 20917000