Year	National currency (Billions)
1980	0.226
1981	0.338
1982	0.691
1983	-1.362
1984	2.060
1985	-1.953
1986	-6.491
1987	-1.691
1988	-5.103
1989	-13.957
1990	-11.983
1991	-2.701
1992	-7.617
1993	-18.331
1994	-20.531
1995	-13.227
1996	-7.490
1997	0.208
1998	-3.411
1999	8.571
2000	10.258
2001	-2.251
2002	-19.424
2003	-20.373
2004	2.781
2005	53.141
2006	79.051
2007	77.650
2008	-192.954
2009	-139.537
2010	-112.009
2011	-115.257
2012	-48.429
2013	-24.581
2014	6.155
2015	-9.137
2016	315.246
2017	25.837
2018	27.162
2019	-48.202
2020	-260.559
2021	-277.462
2022	-155.327
2023	-86.728
2024	-94.927
2025	-89.780
2026	-74.441
2027	-84.706
2028	-90.279
2029	-95.723