Year	Percent
1961	22.72727
1962	20.45455
1963	20.45455
1964	20.45455
1965	20.45455
1966	20.45455
1967	20.45455
1968	20.45455
1969	20.45455
1970	20.45455
1971	22.72727
1972	20.45455
1973	20.45455
1974	20.45455
1975	20.45455
1976	20.45455
1977	20.45455
1978	20.45455
1979	20.45455
1980	20.45455
1981	20.45455
1982	20.45455
1983	20.45455
1984	20.45455
1985	20.45455
1986	20.45455
1987	20.45455
1988	20.45455
1989	20.45455
1990	20.45455
1991	20.45455
1992	20.45455
1993	20.45455
1994	20.45455
1995	20.45455
1996	20.45455
1997	20.45455
1998	20.45455
1999	20.45455
2000	20.45455
2001	20.45455
2002	20.45455
2003	20.45455
2004	20.45455
2005	20.45455
2006	20.45455
2007	20.45455
2008	20.45455
2009	20.45455
2010	20.45455
2011	20.45455
2012	20.45455
2013	20.45455
2014	20.45455
2015	20.45455
2016	20.45455
2017	20.45455
2018	20.45455
2019	20.45455
2020	20.45455
2021	20.45455