Year	National Currency
1988-01-01	15413397405.0
1989-01-01	15476948724.3
1990-01-01	15341665464.1
1991-01-01	15422758136.5
1992-01-01	15579896803.3
1993-01-01	15996540244.6
1994-01-01	16465115639.1
1995-01-01	17102284953.0
1996-01-01	17933431831.9
1997-01-01	18579946974.4
1998-01-01	18720988625.1
1999-01-01	19489663515.1
2000-01-01	20064970863.4
2001-01-01	20963742819.4
2002-01-01	22218318633.8
2003-01-01	23013420302.6
2004-01-01	23800464763.0
2005-01-01	25035678159.1
2006-01-01	25860049228.7
2007-01-01	26840352077.4
2008-01-01	26935211679.0
2009-01-01	27962727937.9
2010-01-01	28099015647.5