Year Persons 2005-01-01 17615229.75 2006-01-01 18052982.25 2007-01-01 18289397.50 2008-01-01 18795573.00 2009-01-01 19236987.25 2010-01-01 19484237.25 2011-01-01 19914653.75 2012-01-01 20297060.75 2013-01-01 20675365.25 2014-01-01 20848885.75 2015-01-01 21207718.75 2016-01-01 21606925.50 2017-01-01 21772324.50