Year	National currency (Billions)
1980	-0.746
1981	0.278
1982	-0.167
1983	-1.127
1984	-0.384
1985	-0.436
1986	-0.123
1987	-1.907
1988	-0.291
1989	-0.210
1990	2.043
1991	-0.343
1992	-1.605
1993	-2.573
1994	-2.532
1995	-3.296
1996	-1.159
1997	-1.095
1998	1.081
1999	0.756
2000	6.592
2001	5.204
2002	5.294
2003	3.841
2004	2.902
2005	3.467
2006	4.170
2007	3.571
2008	2.376
2009	-0.682
2010	-3.299
2011	-2.689
2012	-3.038
2013	-1.798
2014	-1.395
2015	0.297
2016	-0.813
2017	-2.113
2018	-2.432
2019	-3.119
2020	-8.721
2021	-6.207
2022	-2.714
2023	-4.269
2024	-5.146
2025	-6.687
2026	-7.103
2027	-7.456
2028	-6.874
2029	-7.770