Year	National currency (Billions)
1996	0.076
1997	-0.143
1998	-0.569
1999	-0.465
2000	-0.589
2001	-0.714
2002	-0.447
2003	-0.181
2004	-0.298
2005	-0.373
2006	-0.778
2007	-1.034
2008	-1.836
2009	-1.993
2010	-1.942
2011	-2.349
2012	-0.734
2013	-4.283
2014	-1.274
2015	-0.454
2016	-0.442
2017	-0.156
2018	-0.365
2019	-0.552
2020	-3.127
2021	-2.917
2022	-2.159
2023	-1.881
2024	-1.561
2025	-1.465
2026	-1.829
2027	-1.877
2028	-1.791
2029	-1.834