Year	National currency (Billions)
1985	-0.003
1986	-0.006
1987	0.018
1988	0.034
1989	0.022
1990	0.013
1991	0.001
1992	-0.002
1993	0.006
1994	0.010
1995	0.009
1996	0.002
1997	-0.008
1998	0.075
1999	0.064
2000	0.005
2001	-0.035
2002	-0.035
2003	-0.031
2004	-0.009
2005	-0.108
2006	-0.095
2007	0.026
2008	0.061
2009	-0.011
2010	-0.065
2011	-0.122
2012	-0.206
2013	-0.077
2014	0.003
2015	0.041
2016	0.089
2017	0.042
2018	0.108
2019	-0.028
2020	-0.333
2021	-0.118
2022	0.093
2023	0.074
2024	0.064
2025	0.078
2026	0.092
2027	0.094
2028	0.097
2029	0.101