Year	National currency (Billions)
2000	-0.240
2001	-0.278
2002	-0.253
2003	-0.431
2004	-0.210
2005	-0.145
2006	-0.132
2007	-0.119
2008	-0.253
2009	-0.196
2010	-0.153
2011	-0.210
2012	-0.247
2013	-0.178
2014	-0.133
2015	-0.086
2016	0.119
2017	0.393
2018	0.255
2019	0.073
2020	-1.285
2021	-1.141
2022	-0.982
2023	-0.925
2024	-0.921
2025	-0.888
2026	-0.846
2027	-0.726
2028	-0.732
2029	-0.766