Year	National currency (Billions)
2001	0.067
2002	0.103
2003	0.042
2004	-0.133
2005	-0.084
2006	0.107
2007	0.231
2008	-0.019
2009	-0.026
2010	-0.133
2011	-0.118
2012	-0.178
2013	-0.180
2014	-0.123
2015	-0.108
2016	-0.106
2017	-0.101
2018	-0.201
2019	-0.255
2020	-0.425
2021	-0.101
2022	-0.069
2023	-0.076
2024	-0.104
2025	-0.135
2026	-0.151
2027	-0.158
2028	-0.171
2029	-0.169