Year	National currency (Billions)
1980	-0.175
1981	-0.594
1982	-0.580
1983	-0.778
1984	-1.127
1985	-1.827
1986	-1.969
1987	-2.081
1988	-3.014
1989	-4.427
1990	-5.968
1991	-5.340
1992	-6.825
1993	-8.267
1994	-6.940
1995	-9.056
1996	-8.406
1997	-6.947
1998	-7.852
1999	-7.751
2000	-5.739
2001	-8.319
2002	-9.847
2003	-14.009
2004	-17.101
2005	-12.329
2006	-12.954
2007	-15.607
2008	-24.625
2009	-36.141
2010	-25.544
2011	-21.364
2012	-12.896
2013	-7.230
2014	-7.529
2015	-5.283
2016	0.528
2017	1.979
2018	1.435
2019	-0.109
2020	-17.348
2021	-13.613
2022	-4.960
2023	-3.635
2024	-2.162
2025	-2.128
2026	-2.530
2027	-3.305
2028	-3.743
2029	-3.909