Year	National currency (Billions)
2005	-0.004
2006	-0.012
2007	-0.008
2008	-0.007
2009	-0.006
2010	-0.010
2011	-0.005
2012	0.003
2013	0.010
2014	-0.002
2015	0.001
2016	0.013
2017	-0.001
2018	0.018
2019	-0.006
2020	0.006
2021	-0.013
2022	0.002
2023	-0.004
2024	-0.004
2025	-0.009
2026	-0.011
2027	-0.012
2028	-0.013
2029	-0.014