Year	National currency (Billions)
2000	-0.061
2001	-0.188
2002	-0.041
2003	-0.131
2004	-0.284
2005	-0.374
2006	-0.725
2007	-1.863
2008	-2.747
2009	-1.888
2010	-1.277
2011	-2.440
2012	-0.741
2013	-0.675
2014	-0.101
2015	0.018
2016	0.268
2017	0.303
2018	0.318
2019	0.279
2020	-2.634
2021	-0.811
2022	-0.876
2023	-0.288
2024	-1.654
2025	-1.068
2026	-0.795
2027	-0.780
2028	-0.781
2029	-0.701