Year	%
2000	6.64
2001	6.64
2002	6.64
2003	6.63
2006	6.63
2007	6.62
2008	6.7
2009	6.7
2010	6.7
2011	6.7
2012	6.7
2013	6.7
2014	6.7
2015	6.68
2016	6.68
2017	6.7
2018	6.7
2019	6.7
2020	6.7
2021	6.7