Year	National currency (Billions)
1990	-0.076
1991	-0.044
1992	-0.043
1993	0.023
1994	0.055
1995	0.089
1996	0.076
1997	-0.004
1998	0.067
1999	0.228
2000	0.102
2001	0.117
2002	-0.041
2003	-0.044
2004	-0.061
2005	0.012
2006	0.073
2007	0.047
2008	0.056
2009	-0.091
2010	-0.080
2011	-0.078
2012	-0.152
2013	-0.335
2014	-0.274
2015	-0.142
2016	-0.035
2017	-0.522
2018	-0.101
2019	0.109
2020	-0.493
2021	-0.912
2022	-0.166
2023	0.040
2024	0.252
2025	0.346
2026	0.389
2027	0.427
2028	0.471
2029	0.483