Year	Percent
1961	25.64103
1962	25.64103
1963	28.20513
1964	28.20513
1965	28.20513
1966	28.20513
1967	28.20513
1968	28.20513
1969	28.20513
1970	28.20513
1971	28.20513
1972	28.20513
1973	25.64103
1974	25.64103
1975	25.64103
1976	25.64103
1977	28.20513
1978	28.20513
1979	30.76923
1980	30.76923
1981	30.76923
1982	28.20513
1983	30.76923
1984	30.76923
1985	30.76923
1986	33.33333
1987	29.89744
1988	28.97436
1989	28.05128
1990	27.12821
1991	26.20513
1992	25.28205
1993	24.35897
1994	23.4359
1995	22.51282
1996	21.58974
1997	20.66667
1998	19.74359
1999	18.82051
2000	17.94872
2001	17.94872
2002	17.94872
2003	17.94872
2004	17.94872
2005	17.94872
2006	17.94872
2007	17.94872
2008	17.94872
2009	17.94872
2010	17.94872
2011	17.94872
2012	17.94872
2013	17.94872
2014	17.94872
2015	17.94872
2016	17.94872
2017	17.94872
2018	17.94872
2019	17.94872
2020	17.94872
2021	17.94872