Year	National Currency
1998-01-01	315991604366
1999-01-01	320806440648
2000-01-01	337513739450
2001-01-01	369960848786
2002-01-01	392599522361
2003-01-01	410934589418
2004-01-01	437059809323
2005-01-01	459956436469
2006-01-01	491888916803
2007-01-01	530387836830
2008-01-01	568095944255
2009-01-01	517558865197
2010-01-01	538553769299