Year	National currency (Billions)
1991	-0.447
1992	-0.342
1993	-0.698
1994	-0.231
1995	-0.540
1996	-0.358
1997	-0.015
1998	-2.006
1999	0.071
2000	-2.083
2001	-0.965
2002	-1.010
2003	-0.165
2004	0.704
2005	1.151
2006	0.574
2007	0.471
2008	0.322
2009	-0.217
2010	-1.375
2011	-1.113
2012	-0.715
2013	0.379
2014	1.651
2015	-6.467
2016	0.280
2017	-0.728
2018	7.225
2019	3.963
2020	-1.180
2021	3.482
2022	-6.470
2023	-2.868
2024	-9.277
2025	-9.358
2026	-9.504
2027	-9.452
2028	-9.895
2029	-11.040