Year	National currency (Billions)
1985	13.037
1986	12.683
1987	12.938
1988	13.080
1989	12.940
1990	13.081
1991	13.492
1992	14.134
1993	14.177
1994	14.623
1995	15.278
1996	15.718
1997	15.487
1998	15.400
1999	15.870
2000	16.322
2001	16.770
2002	17.420
2003	17.926
2004	18.016
2005	18.086
2006	18.881
2007	18.910
2008	18.544
2009	18.216
2010	18.690
2011	19.390
2012	19.567
2013	19.151
2014	18.671
2015	18.595
2016	18.137
2017	18.378
2018	18.387
2019	19.099
2020	19.315
2021	19.008
2022	18.698
2023	18.961
2024	19.414
2025	19.903
2026	20.483
2027	21.109
2028	21.755
2029	22.425
