Year National Currency 2005-01-01 22377356200 2006-01-01 24545775700 2007-01-01 28747224800 2008-01-01 34622375200 2009-01-01 35953830700 2010-01-01 37426739400 2011-01-01 36914109700 2012-01-01 35982188700 2013-01-01 28942695800 2014-01-01 27633314800 2015-01-01 28595669200 2016-01-01 30479363700 2017-01-01 31903319800