Year	National currency (Billions)
2000	-0.001
2001	-0.009
2002	-0.015
2003	0.003
2004	-0.005
2005	-0.005
2006	0.049
2007	0.033
2008	-0.045
2009	-0.024
2010	0.023
2011	-0.104
2012	-0.076
2013	0.039
2014	-0.152
2015	-0.116
2016	-0.125
2017	-0.237
2018	-0.153
2019	-0.152
2020	-0.122
2021	-0.088
2022	-0.212
2023	-0.283
2024	-0.236
2025	-0.253
2026	-0.272
2027	-0.282
2028	-0.296
2029	-0.260