Year	National currency (Billions)
1995	-0.445
1996	-0.791
1997	-0.730
1998	-1.341
1999	-0.911
2000	-0.056
2001	0.008
2002	0.200
2003	0.324
2004	0.683
2005	0.266
2006	1.335
2007	1.325
2008	0.347
2009	-2.232
2010	-0.944
2011	-0.100
2012	-2.492
2013	-7.891
2014	-8.268
2015	-6.680
2016	-10.058
2017	-6.034
2018	-3.016
2019	-3.735
2020	-7.074
2021	-1.701
2022	0.052
2023	-4.171