Year	Percent
1961	10.86957
1962	10.86957
1963	10.86957
1964	10.86957
1965	10.86957
1966	10.86957
1967	10.86957
1968	10.86957
1969	10.86957
1970	10.86957
1971	10.86957
1972	10.86957
1973	10.86957
1974	10.86957
1975	10.86957
1976	10.86957
1977	10.86957
1978	10.86957
1979	10.86957
1980	10.86957
1981	10.86957
1982	13.04348
1983	13.04348
1984	13.04348
1985	13.04348
1986	13.04348
1987	13.04348
1988	10.86957
1989	10.86957
1990	8.69565
1991	8.69565
1992	8.69565
1993	8.69565
1994	8.69565
1995	8.69565
1996	8.69565
1997	8.69565
1998	8.69565
1999	8.69565
2000	8.69565
2001	8.69565
2002	8.69565
2003	8.69565
2004	8.69565
2005	8.69565
2006	8.69565
2007	6.52174
2008	6.52174
2009	6.30435
2010	5.21739
2011	3.26087
2012	3.26087
2013	3.36957
2014	3.36957
2015	3.36957
2016	3.36957
2017	3.36957
2018	3.36957
2019	3.36957
2020	3.36957
2021	3.36957