Year Persons 2000-01-01 14154725 2001-01-01 13866400 2002-01-01 13470400 2003-01-01 13324050 2004-01-01 13503500 2005-01-01 13834200 2006-01-01 14338450 2007-01-01 14996450 2008-01-01 15557425 2009-01-01 15629500 2010-01-01 15233050 2011-01-01 15312775 2012-01-01 15340275 2013-01-01 15313300 2014-01-01 15590975 2015-01-01 15811550 2016-01-01 15901850 2017-01-01 16078800