Year	National currency (Billions)
2002	0.098
2003	0.047
2004	-0.138
2005	-0.070
2006	0.085
2007	0.226
2008	-0.015
2009	0.053
2010	-0.043
2011	-0.039
2012	-0.118
2013	-0.162
2014	-0.129
2015	-0.105
2016	-0.090
2017	-0.077
2018	-0.176
2019	-0.188
2020	-0.507
2021	-0.072
2022	-0.034
2023	0.019
2024	-0.069
2025	-0.080
2026	-0.073
2027	-0.076
2028	-0.087
2029	-0.076