Year	National currency (Billions)
1983	-0.096
1984	-0.034
1985	-0.060
1986	-0.083
1987	0.011
1988	0.015
1989	0.015
1990	-0.092
1991	-0.033
1992	-0.270
1993	-0.353
1994	-0.082
1995	0.099
1996	0.206
1997	0.070
1998	-0.019
1999	-0.253
2000	0.044
2001	-0.204
2002	-0.299
2003	0.037
2004	0.410
2005	0.649
2006	1.363
2007	1.953
2008	0.862
2009	-1.755
2010	1.187
2011	0.945
2012	-0.528
2013	-3.278
2014	-3.579
2015	-2.736
2016	-3.087
2017	-1.795
2018	-2.048
2019	-3.715
2020	-7.305
2021	-6.270
2022	-5.852
2023	-4.935
2024	-4.810
2025	-3.385
2026	-1.909
2027	0.129
2028	0.329
2029	0.635