Year	National currency (Billions)
1990	0.003
1991	0.005
1992	0.005
1993	-0.178
1994	-0.240
1995	-0.312
1996	-0.412
1997	-0.200
1998	-0.729
1999	-1.053
2000	-0.532
2001	-0.513
2002	-0.273
2003	-0.211
2004	-0.279
2005	-0.106
2006	-0.108
2007	-0.290
2008	-1.068
2009	-2.513
2010	-1.934
2011	-2.797
2012	-1.049
2013	-0.916
2014	-0.243
2015	-0.078
2016	0.101
2017	0.192
2018	0.272
2019	0.129
2020	-3.598
2021	-0.555
2022	-0.440
2023	-0.589
2024	-1.954
2025	-1.338
2026	-1.099
2027	-1.111
2028	-1.094
2029	-1.011