Year National Currency 2004-01-01 18594000000 2005-01-01 17055000000 2006-01-01 16931000000 2007-01-01 17014000000 2008-01-01 14937000000 2009-01-01 14902000000 2010-01-01 15295000000 2011-01-01 20714000000 2012-01-01 26843000000 2013-01-01 31794000000 2014-01-01 36827000000 2015-01-01 38289000000 2016-01-01 40127000000