Year	National currency (Billions)
1998	-0.090
1999	-0.294
2000	-0.547
2001	-0.437
2002	-0.418
2003	-0.065
2004	-0.029
2005	0.131
2006	0.418
2007	0.038
2008	-0.976
2009	-1.325
2010	-1.029
2011	-0.715
2012	-0.703
2013	-0.343
2014	-0.784
2015	-0.056
2016	0.103
2017	0.569
2018	0.554
2019	0.489
2020	-1.603
2021	0.239
2022	0.421
2023	-0.347
2024	-1.273
2025	-1.345
2026	-1.242
2027	-1.017
2028	-0.725
2029	-0.559