Year	Percent
1961	36.45833
1962	36.45833
1963	36.45833
1964	36.45833
1965	37.5
1966	37.5
1967	37.5
1968	37.5
1969	37.5
1970	37.5
1971	38.54167
1972	38.54167
1973	38.54167
1974	38.54167
1975	38.54167
1976	38.54167
1977	38.54167
1978	38.54167
1979	38.54167
1980	38.54167
1981	38.54167
1982	34.375
1983	35.41667
1984	30.20833
1985	31.25
1986	31.25
1987	31.25
1988	32.29167
1989	31.25
1990	30.20833
1991	31.25
1992	31.25
1993	31.25
1994	32.29167
1995	29.16667
1996	29.16667
1997	28.125
1998	32.29167
1999	36.45833
2000	37.5
2001	37.5
2002	37.5
2003	37.5
2004	36.45833
2005	35.41667
2006	35.41667
2007	35.41667
2008	35.41667
2009	35.41667
2010	34.375
2011	35.41667
2012	36.45833
2013	36.45833
2014	38.54167
2015	38.54167
2016	41.66667
2017	42.70833
2018	43.75
2019	43.75
2020	43.75
2021	43.75