Year	National currency (Billions)
1990	0.016
1991	0.017
1992	0.016
1993	0.015
1994	0.021
1995	0.021
1996	-0.005
1997	-0.007
1998	-0.031
1999	-0.090
2000	-0.113
2001	-0.085
2002	-0.087
2003	-0.004
2004	-0.017
2005	0.035
2006	0.074
2007	0.087
2008	0.085
2009	0.090
2010	0.030
2011	0.146
2012	0.204
2013	0.328
2014	0.263
2015	0.189
2016	0.136
2017	0.073
2018	0.075
2019	-0.001
2020	-0.045
2021	0.149
2022	-0.079
2023	0.053
2024	0.018
2025	-0.006
2026	-0.040
2027	-0.077
2028	-0.119
2029	-0.125