Year	National currency (Billions)
1999	-0.127
2000	-0.094
2001	-0.096
2002	-0.249
2003	-0.105
2004	-0.034
2005	-0.563
2006	-0.569
2007	-0.799
2008	-0.948
2009	-1.836
2010	-1.220
2011	-1.504
2012	-1.899
2013	-2.713
2014	-2.551
2015	-1.088
2016	-0.906
2017	-0.703
2018	-0.661
2019	-1.139
2020	-2.109
2021	-1.689
2022	-2.586
2023	-2.563
2024	-2.734
2025	-2.692
2026	-2.618
2027	-2.118
2028	-1.847
2029	-1.353