Year	National currency (Billions)
1980	0.970
1981	1.820
1982	1.028
1983	0.171
1984	1.427
1985	1.488
1986	2.098
1987	0.487
1988	3.739
1989	6.134
1990	6.034
1991	0.261
1992	-4.138
1993	-6.928
1994	-5.808
1995	-5.884
1996	-3.437
1997	-1.468
1998	1.851
1999	2.025
2000	9.178
2001	7.074
2002	5.900
2003	3.550
2004	3.425
2005	4.263
2006	6.785
2007	9.569
2008	8.120
2009	-4.514
2010	-4.767
2011	-2.018
2012	-4.342
2013	-5.159
2014	-6.181
2015	-5.127
2016	-3.694
2017	-1.476
2018	-1.992
2019	-2.267
2020	-13.256
2021	-7.066
2022	-2.098
2023	-7.848
2024	-9.957
2025	-10.239
2026	-9.456
2027	-8.916
2028	-7.719
2029	-8.030