Year	National currency (Billions)
1983	-0.011
1984	-0.034
1985	-0.007
1986	-0.091
1987	0.156
1988	0.313
1989	0.281
1990	0.391
1991	0.220
1992	0.318
1993	0.105
1994	0.034
1995	0.172
1996	0.009
1997	0.109
1998	-0.210
1999	-0.038
2000	-0.256
2001	-0.060
2002	-0.330
2003	0.392
2004	0.318
2005	0.345
2006	0.157
2007	-0.233
2008	1.349
2009	1.558
2010	0.761
2011	0.812
2012	0.958
2013	0.849
2014	1.032
2015	0.906
2016	0.746
2017	0.699
2018	0.571
2019	0.803
2020	-2.990
2021	-0.691
2022	0.350
2023	0.406
2024	0.262
2025	0.578
2026	0.650
2027	0.685
2028	0.967
2029	1.118