Year	National currency (Billions)
2000	0.001
2001	-0.008
2002	-0.014
2003	0.004
2004	-0.004
2005	-0.005
2006	0.049
2007	0.034
2008	-0.043
2009	-0.022
2010	0.025
2011	-0.102
2012	-0.076
2013	0.042
2014	-0.145
2015	-0.106
2016	-0.115
2017	-0.222
2018	-0.126
2019	-0.119
2020	-0.083
2021	-0.057
2022	-0.174
2023	-0.243
2024	-0.174
2025	-0.178
2026	-0.194
2027	-0.189
2028	-0.188
2029	-0.149