Year	National currency (Billions)
1985	-0.075
1986	0.023
1987	-0.219
1988	-0.166
1989	0.043
1990	0.049
1991	-0.021
1992	0.369
1993	0.145
1994	0.116
1995	0.152
1996	0.056
1997	0.064
1998	-0.075
1999	0.096
2000	0.048
2001	0.075
2002	-0.084
2003	0.060
2004	0.119
2005	-0.252
2006	-0.129
2007	-0.296
2008	-0.412
2009	-1.164
2010	-1.120
2011	-1.642
2012	-2.649
2013	-1.740
2014	-1.313
2015	-1.411
2016	-0.217
2017	-0.216
2018	-0.431
2019	-0.686
2020	-1.386
2021	-1.089
2022	-0.930
2023	-0.991
2024	-0.920
2025	0.029
2026	0.299
2027	0.620
2028	0.915
2029	1.456