Year	National currency (Billions)
2005	0.011
2006	0.012
2007	0.011
2008	0.007
2009	0.007
2010	0.007
2011	0.007
2012	0.007
2013	0.007
2014	0.007
2015	0.007
2016	0.006
2017	0.007
2018	0.008
2019	0.009
2020	0.009
2021	0.009
2022	0.009
2023	0.008
2024	0.007
2025	0.006
2026	0.006
2027	0.011
2028	0.017
2029	0.024