Year	National currency (Billions)
2002	-0.006
2003	-0.046
2004	-0.015
2005	-0.005
2006	0.118
2007	0.255
2008	-0.047
2009	-0.175
2010	-0.121
2011	-0.172
2012	-0.126
2013	-0.080
2014	0.054
2015	-0.132
2016	-0.159
2017	-0.190
2018	-0.189
2019	0.022
2020	-0.344
2021	0.032
2022	-0.148
2023	0.177
2024	-0.104
2025	-0.115
2026	-0.123
2027	-0.132
2028	-0.142
2029	-0.154