Year	National currency (Billions)
1980	464.241
1981	503.530
1982	516.534
1983	524.824
1984	490.720
1985	526.524
1986	501.478
1987	507.753
1988	572.342
1989	537.618
1990	593.303
1991	656.946
1992	743.967
1993	799.085
1994	843.305
1995	889.039
1996	915.408
1997	905.429
1998	955.713
1999	925.884
2000	947.130
2001	981.983
2002	1039.888
2003	1018.708
2004	1089.026
2005	1156.714
2006	1215.082
2007	1284.035
2008	1341.515
2009	1420.832
2010	1469.703