Year	National Currency
1998-01-01	249519933529
1999-01-01	256850213723
2000-01-01	285547616952
2001-01-01	308869712761
2002-01-01	332930752712
2003-01-01	356544404817
2004-01-01	376660966871
2005-01-01	392260952903
2006-01-01	420747496809
2007-01-01	454298955024
2008-01-01	495268228112
2009-01-01	489823780062
2010-01-01	505785114421