Year	Percent
1980	0.005
1981	0.005
1982	0.005
1983	0.005
1984	0.005
1985	0.005
1986	0.005
1987	0.005
1988	0.005
1989	0.005
1990	0.006
1991	0.006
1992	0.005
1993	0.005
1994	0.006
1995	0.006
1996	0.006
1997	0.006
1998	0.005
1999	0.005
2000	0.005
2001	0.005
2002	0.005
2003	0.005
2004	0.005
2005	0.005
2006	0.005
2007	0.005
2008	0.005
2009	0.005
2010	0.005
2011	0.006
2012	0.006
2013	0.006
2014	0.006
2015	0.006
2016	0.005
2017	0.005
2018	0.005
2019	0.005
2020	0.005
2021	0.005
2022	0.005
2023	0.005
2024	0.005