Year	National Currency
1998-01-01	27448515337.9
1999-01-01	31076624135.2
2000-01-01	35652759606.0
2001-01-01	39374926039.9
2002-01-01	41095672870.6
2003-01-01	43807296711.0
2004-01-01	47403512960.0
2005-01-01	53738778482.0
2006-01-01	58876956074.0
2007-01-01	64398049883.0
2008-01-01	63826887120.0
2009-01-01	55852583664.0
2010-01-01	51204601803.0