Year	National currency (Billions)
1982	-0.009
1983	0.009
1984	0.027
1985	0.012
1986	0.007
1987	-0.027
1988	-0.023
1989	0.057
1990	0.153
1991	0.206
1992	0.118
1993	0.219
1994	0.189
1995	0.196
1996	0.090
1997	0.013
1998	-0.630
1999	-0.886
2000	-0.061
2001	-0.204
2002	-0.203
2003	0.080
2004	0.605
2005	0.489
2006	1.398
2007	1.253
2008	1.180
2009	-0.638
2010	-0.270
2011	-1.890
2012	0.951
2013	-0.611
2014	0.856
2015	-0.388
2016	-2.914
2017	-0.646
2018	-1.540
2019	-1.968
2020	-0.004
2021	-1.941
2022	-2.056
2023	1.329
2024	1.262
2025	-1.065
2026	-1.517
2027	-1.782
2028	-1.730
2029	-1.853