Year	National currency (Billions)
1983	-0.031
1984	-0.065
1985	-0.059
1986	-0.129
1987	0.039
1988	0.181
1989	0.142
1990	0.234
1991	0.062
1992	0.143
1993	-0.089
1994	-0.171
1995	-0.062
1996	-0.242
1997	-0.167
1998	-0.534
1999	-0.342
2000	-0.518
2001	-0.325
2002	-0.622
2003	0.129
2004	0.020
2005	0.021
2006	-0.142
2007	-0.688
2008	0.721
2009	0.558
2010	0.061
2011	0.432
2012	0.420
2013	0.059
2014	0.628
2015	0.342
2016	0.039
2017	0.072
2018	-0.113
2019	0.260
2020	-3.613
2021	-1.407
2022	-0.233
2023	-0.448
2024	-0.438
2025	-0.147
2026	-0.102
2027	-0.064
2028	0.229
2029	0.387