Year	National Currency
1998-01-01	20027000000
1999-01-01	18958000000
2000-01-01	18953000000
2001-01-01	19170000000
2002-01-01	18133000000
2003-01-01	17105000000
2004-01-01	15866000000
2005-01-01	17346000000
2006-01-01	18151000000
2007-01-01	18266000000
2008-01-01	20485000000
2009-01-01	27494000000
2010-01-01	34649000000