Year	National currency (Billions)
2000	-0.241
2001	-0.252
2002	-0.238
2003	-0.455
2004	-0.222
2005	-0.212
2006	-0.153
2007	-0.190
2008	-0.357
2009	-0.204
2010	-0.274
2011	-0.215
2012	-0.256
2013	-0.134
2014	-0.113
2015	-0.148
2016	0.216
2017	0.322
2018	0.057
2019	-0.254
2020	-0.819
2021	-1.034
2022	-1.028
2023	-1.021
2024	-1.013
2025	-0.927
2026	-0.853
2027	-0.739
2028	-0.728
2029	-0.760