Year	National currency (Billions)
1996	-0.030
1997	-0.032
1998	-0.050
1999	-0.130
2000	-0.152
2001	-0.170
2002	-0.135
2003	-0.220
2004	-0.127
2005	-0.109
2006	-0.072
2007	-0.006
2008	0.044
2009	-0.083
2010	-0.067
2011	-0.039
2012	-0.009
2013	-0.049
2014	-0.074
2015	-0.226
2016	-0.200
2017	-0.158
2018	-0.062
2019	-0.138
2020	-0.351
2021	-0.160
2022	-0.027
2023	-0.058
2024	-0.055
2025	-0.078
2026	-0.082
2027	-0.081
2028	-0.084
2029	-0.083