Year	National currency (Billions)
1980	5.687
1981	5.862
1982	6.188
1983	6.376
1984	6.681
1985	6.878
1986	7.137
1987	7.329
1988	7.905
1989	8.378
1990	8.917
1991	9.590
1992	10.171
1993	10.576
1994	11.126
1995	11.579
1996	12.131
1997	12.527
1998	12.694
1999	12.877
2000	13.386
2001	13.827
2002	14.162
2003	14.763
2004	15.068
2005	15.569
2006	16.223
2007	16.905
2008	17.540
2009	17.604
2010	18.502
2011	19.438
2012	20.438
2013	20.800
2014	21.230
2015	21.920
2016	22.331
2017	21.721
2018	21.393
2019	20.739
2020	19.639
2021	19.973
2022	20.293
2023	20.673
2024	21.165
2025	21.698
2026	22.224
2027	22.694
2028	23.172
2029	23.655