Year	National currency (Billions)
1997	4.446
1998	0.916
1999	4.432
2000	3.208
2001	-1.164
2002	0.696
2003	-1.977
2004	-0.195
2005	0.697
2006	-0.874
2007	6.094
2008	2.863
2009	-2.527
2010	4.048
2011	8.665
2012	8.675
2013	5.632
2014	3.800
2015	-2.970
2016	3.281
2017	8.223
2018	3.355
2019	8.804
2020	-39.255
2021	-6.648
2022	-4.541
2023	6.431
2024	6.216
2025	9.253
2026	6.980
2027	6.116
2028	4.103
2029	2.968