Year	National currency (Billions)
1990	-0.138
1991	-0.117
1992	-0.114
1993	-0.054
1994	-0.021
1995	0.010
1996	-0.009
1997	-0.099
1998	-0.028
1999	0.129
2000	0.007
2001	0.025
2002	-0.143
2003	-0.145
2004	-0.175
2005	-0.109
2006	-0.044
2007	-0.080
2008	-0.087
2009	-0.245
2010	-0.258
2011	-0.289
2012	-0.338
2013	-0.540
2014	-0.488
2015	-0.383
2016	-0.310
2017	-0.789
2018	-0.415
2019	-0.219
2020	-0.839
2021	-1.335
2022	-0.717
2023	-0.533
2024	-0.361
2025	-0.312
2026	-0.273
2027	-0.216
2028	-0.184
2029	-0.174