Year	National Currency
2004-01-01	4779640000
2005-01-01	7744392000
2006-01-01	12614698000
2007-01-01	17371870000
2008-01-01	19453560000
2009-01-01	18328737000
2010-01-01	17044766000
2011-01-01	15734216000
2012-01-01	14051855000
2013-01-01	13091175000
2014-01-01	11985262000
2015-01-01	11649860000
2016-01-01	11662000000