Year	National currency (Billions)
1980	0.967
1981	1.056
1982	1.064
1983	1.090
1984	1.100
1985	1.131
1986	1.232
1987	1.352
1988	1.470
1989	1.622
1990	1.774
1991	1.962
1992	2.152
1993	2.305
1994	2.522
1995	2.779
1996	2.894
1997	3.136
1998	3.343
1999	3.583
2000	4.153
2001	4.286
2002	4.516
2003	4.788
2004	4.896
2005	5.159
2006	5.403
2007	5.790
2008	6.206
2009	6.260
2010	6.816
2011	6.925
2012	7.364
2013	7.944
2014	8.751
2015	9.997
2016	10.541
2017	11.937
2018	13.044
2019	14.296
2020	13.351
2021	15.323
2022	17.432
2023	19.382
2024	21.085
2025	22.379
2026	23.662
2027	24.973
2028	26.339
2029	27.774