Year	National Currency
1998-01-01	329352000000
1999-01-01	372092000000
2000-01-01	377982000000
2001-01-01	392680000000
2002-01-01	366078000000
2003-01-01	306676000000
2004-01-01	280957000000
2005-01-01	320096000000
2006-01-01	325831000000
2007-01-01	347183000000
2008-01-01	374203000000
2009-01-01	462368000000
2010-01-01	591201000000