Year National Currency 2004-01-01 10363370000 2005-01-01 11496370000 2006-01-01 13626770000 2007-01-01 15280390000 2008-01-01 16406560000 2009-01-01 18148280000 2010-01-01 19101650000 2011-01-01 20823000000 2012-01-01 22702000000 2013-01-01 25364000000 2014-01-01 26009000000 2015-01-01 26296000000 2016-01-01 26216000000 2017-01-01 26820000000