Year	National currency (Billions)
1990	65.312
1991	86.298
1992	99.981
1993	101.136
1994	122.787
1995	148.163
1996	171.801
1997	202.737
1998	205.640
1999	217.499
2000	246.311
2001	306.017
2002	295.754
2003	321.564
2004	343.923
2005	358.047
2006	435.294
2007	459.069
2008	491.205
2009	601.185
2010	582.024