Year	National currency (Billions)
1988	-1.231
1989	-0.821
1990	-0.279
1991	-0.048
1992	-0.645
1993	0.058
1994	-0.006
1995	0.054
1996	-0.159
1997	0.041
1998	-0.698
1999	-0.383
2000	0.088
2001	0.339
2002	-0.114
2003	1.301
2004	1.562
2005	2.406
2006	1.826
2007	4.329
2008	9.562
2009	-6.686
2010	0.188
2011	-1.102
2012	-2.197
2013	-4.908
2014	-8.137
2015	-12.948
2016	-15.838
2017	-16.783
2018	-9.526
2019	-5.928
2020	-17.205
2021	-13.244
2022	0.653
2023	-2.085
2024	-5.224
2025	-3.800
2026	-2.774
2027	0.021
2028	1.546
2029	2.482