Year	National currency (Billions)
1998	-0.052
1999	-0.054
2000	-0.082
2001	-0.053
2002	-0.080
2003	-0.083
2004	-0.143
2005	-0.204
2006	0.186
2007	0.272
2008	0.342
2009	-0.042
2010	-0.669
2011	0.182
2012	0.147
2013	-0.298
2014	0.421
2015	-0.950
2016	-1.595
2017	-3.639
2018	-1.912
2019	-1.616
2020	-3.643
2021	-0.674
2022	-0.270
2023	-1.353
2024	-3.589
2025	-3.952
2026	-4.494
2027	-4.898
2028	-5.420
2029	-6.007