Year	National currency (Billions)
1980	-0.001
1981	-0.001
1984	-0.001
1985	-0.001
1986	-0.002
1987	-0.002
1988	-0.003
1989	-0.003
1990	-0.010
1991	-0.010
1992	-0.035
1993	-0.051
1994	-0.064
1995	-0.085
1996	-0.153
1997	-0.214
1998	-0.226
1999	-0.288
2000	-0.268
2001	-0.342
2002	-0.329
2003	-0.325
2004	-0.396
2005	-0.448
2006	-0.881
2007	-1.675
2008	-2.415
2009	-2.635
2010	-4.632
2011	-4.456
2012	-8.503
2013	-11.349
2014	-12.396
2015	-7.355
2016	-14.813
2017	-10.423
2018	-20.957
2019	-26.809
2020	-68.366
2021	-55.540
2022	-72.245
2023	-39.415
2024	-52.755
2025	-52.191
2026	-48.927
2027	-48.210
2028	-52.968
2029	-66.739