Year	National currency (Billions)
1998	-0.014
1999	-0.197
2000	-0.414
2001	-0.308
2002	-0.273
2003	0.040
2004	0.064
2005	0.230
2006	0.551
2007	0.174
2008	-0.851
2009	-1.198
2010	-0.879
2011	-0.551
2012	-0.510
2013	-0.147
2014	-0.574
2015	0.175
2016	0.360
2017	0.829
2018	0.804
2019	0.758
2020	-1.350
2021	0.496
2022	0.702
2023	0.086
2024	-0.649
2025	-0.581
2026	-0.396
2027	-0.090
2028	0.217
2029	0.457