Year	National currency (Billions)
1991	-0.001
1992	-0.001
1993	-0.001
1994	-0.002
1995	0.005
1996	0.017
1997	-0.002
1998	-0.041
1999	-0.054
2000	-0.139
2001	0.089
2002	-0.114
2003	-0.005
2004	-0.066
2005	-0.222
2006	0.046
2007	0.433
2008	0.249
2009	0.231
2010	-0.020
2011	0.359
2012	-0.346
2013	-0.606
2014	-0.869
2015	-1.323
2016	-1.930
2017	-1.904
2018	-1.565
2019	-6.418
2020	-4.629
2021	-3.455
2022	-2.406
2023	-2.118
2024	-1.691
2025	-0.424
2026	-0.718
2027	-1.030
2028	-0.895
2029	-0.656