Year	National currency (Billions)
2001	-0.072
2002	-0.197
2003	-0.236
2004	-0.341
2005	-0.428
2006	-0.602
2007	-0.747
2008	-1.389
2009	-0.921
2010	-0.603
2011	-0.532
2012	0.950
2013	0.003
2014	0.908
2015	-1.160
2016	0.294
2017	1.730
2018	4.612
2019	3.567
2020	-1.816
2021	-0.401
2022	-5.836
2023	-1.450
2024	0.098
2025	0.030
2026	-0.530
2027	-1.300
2028	-1.909
2029	-2.313