Year Persons 2005-01-01 18379750 2006-01-01 18721800 2007-01-01 18885325 2008-01-01 18934900 2009-01-01 19020000 2010-01-01 18761575 2011-01-01 19014275 2012-01-01 19059925 2013-01-01 19296775 2014-01-01 19426850 2015-01-01 19532025 2016-01-01 19897725 2017-01-01 19982900