Year	National currency (Billions)
2000	-0.020
2001	-0.027
2002	-0.021
2003	-0.005
2004	-0.008
2005	0.003
2007	-0.004
2008	-0.003
2009	-0.004
2010	-0.002
2011	0.003
2012	0.002
2013	0.001
2014	0.009
2015	0.014
2016	0.011
2017	0.014
2018	0.018
2019	-0.001
2020	-0.034
2021	-0.018
2022	-0.008
2023	0.001
2024	0.006
2025	0.001