Year Persons 2005-01-01 19946194.50 2006-01-01 19989072.00 2007-01-01 20322359.50 2008-01-01 20592808.25 2009-01-01 21007624.00 2010-01-01 21456276.00 2011-01-01 21531181.50 2012-01-01 21653380.25 2013-01-01 21521871.00 2014-01-01 21387974.25 2015-01-01 21476125.50 2016-01-01 21509669.25 2017-01-01 21588929.00