Year	National Currency
1998-01-01	5555914627.9
1999-01-01	6400610267.2
2000-01-01	7359199796.7
2001-01-01	8709147612.2
2002-01-01	9212769077.7
2003-01-01	9729448343.9
2004-01-01	10902006672.1
2005-01-01	12590405891.3
2006-01-01	14358984232.6
2007-01-01	16124315474.2
2008-01-01	16567653876.4
2009-01-01	15587662297.4
2010-01-01	15839534564.0