Year National Currency 2004-01-01 1664886700 2005-01-01 3445267700 2006-01-01 5184646000 2007-01-01 6967184400 2008-01-01 6073924000 2009-01-01 5374029900 2010-01-01 4515031100 2011-01-01 4270743600 2012-01-01 4354640500 2013-01-01 5465593500 2014-01-01 7491143900 2015-01-01 9419463600 2016-01-01 9977722100 2017-01-01 19708638700