Year National Currency 2004-01-01 4650624000 2005-01-01 7274936000 2006-01-01 11016245000 2007-01-01 16029618000 2008-01-01 18894767000 2009-01-01 17514034000 2010-01-01 16050409000 2011-01-01 15013068000 2012-01-01 14806267000 2013-01-01 14456816000 2014-01-01 14344736000 2015-01-01 15037654000 2016-01-01 16094759000 2017-01-01 16798000000