Year	National currency (Billions)
1980	-0.584
1981	-0.695
1982	-0.698
1983	-0.375
1984	-0.078
1985	-0.206
1986	-0.327
1987	0.260
1988	1.310
1989	1.857
1990	2.015
1991	1.957
1992	1.852
1993	1.803
1994	2.055
1995	1.464
1996	2.286
1997	3.288
1998	4.111
1999	5.223
2000	7.013
2001	2.481
2002	0.825
2003	2.093
2004	3.532
2005	4.137
2006	6.496
2007	1.752
2008	-11.865
2009	-21.072
2010	-50.095
2011	-19.120
2012	-9.175
2013	-5.117
2014	-0.508
2015	0.899
2016	3.942
2017	4.902
2018	5.575
2019	6.200
2020	-14.919
2021	-3.338
2022	11.619
2023	10.777
2024	10.778
2025	10.143
2026	9.890
2027	8.038
2028	6.723
2029	6.039