Year	National currency (Billions)
1980	0.299
1981	0.312
1982	0.339
1983	0.356
1984	0.393
1985	0.453
1986	0.506
1987	0.581
1988	0.638
1989	0.722
1990	0.751
1991	0.812
1992	0.837
1993	0.836
1994	0.878
1995	0.924
1996	0.991
1997	1.059
1998	1.204
1999	1.301
2000	1.404
2001	1.405
2002	1.459
2003	1.596
2004	1.618
2005	1.878
2006	1.886
2007	2.048
2008	2.230
2009	2.082
2010	2.082
2011	2.102
2012	2.160
2013	2.275
2014	2.461
2015	2.692
2016	2.866
2017	3.039
2018	3.150
2019	3.276
2020	2.817
2021	3.032
2022	3.325
2023	3.585
2024	3.797
2025	4.016
2026	4.227
2027	4.438
2028	4.659
2029	4.892