Year	National currency (Billions)
2000	0.315
2001	-0.086
2002	-0.076
2003	-0.142
2004	-0.260
2005	0.354
2006	0.299
2007	2.450
2008	0.377
2009	-0.586
2010	-0.428
2011	-0.524
2012	-0.540
2013	0.106
2014	-0.342
2015	-0.440
2016	-0.326
2017	-0.219
2018	-0.162
2019	-0.006
2020	0.300
2021	-0.166
2022	-0.284
2023	0.131
2024	0.150
2025	0.280
2026	0.391
2027	0.140
2028	0.217
2029	0.250