Year	National currency (Billions)
1980	-0.002
1981	-0.009
1982	-0.005
1983	-0.021
1984	-0.019
1985	-0.019
1986	-0.025
1987	-0.042
1988	-0.057
1989	-0.043
1990	-0.101
1991	-0.065
1992	-0.017
1993	-0.084
1994	-0.564
1995	-0.335
1996	-0.471
1997	-0.488
1998	-0.246
1999	0.072
2000	-1.028
2001	-4.710
2002	-3.467
2003	-2.808
2004	-4.357
2005	-2.962
2006	-5.948
2007	-4.845
2008	-4.701
2009	-13.306
2010	-10.518
2011	-14.843
2012	-12.209
2013	-8.778
2014	-49.244
2015	-34.857
2016	-20.059
2017	8.131
2018	-10.390
2019	47.761
2020	-16.331
2021	-12.924
2022	-26.132
2023	9.008
2024	13.432
2025	32.656
2026	49.675
2027	84.497
2028	128.566
2029	155.276