Year	National currency (Billions)
1984	0.014
1985	0.021
1986	0.015
1987	0.011
1988	0.008
1989	-0.006
1990	0.015
1991	0.003
1992	-0.020
1993	-0.005
1994	0.010
1995	0.022
1996	0.027
1997	-0.014
1998	-0.004
1999	0.001
2000	0.016
2001	0.005
2003	-0.007
2004	-0.013
2005	-0.031
2006	-0.011
2007	-0.014
2008	0.010
2009	-0.014
2010	-0.030
2011	-0.033
2012	-0.002
2013	-0.079
2014	-0.030
2015	-0.005
2016	0.049
2017	0.035
2018	0.032
2019	-0.009
2020	-0.071
2021	-0.117
2022	-0.190
2023	-0.254
2024	-0.145
2025	-0.032
2026	0.089
2027	0.099
2028	0.104
2029	0.109