Year	Percent
1961	44.18605
1962	44.18605
1963	44.18605
1964	44.18605
1965	44.18605
1966	44.18605
1967	44.18605
1968	44.18605
1969	44.18605
1970	44.18605
1971	44.18605
1972	44.18605
1973	44.18605
1974	44.18605
1975	44.18605
1976	44.18605
1977	44.18605
1978	44.18605
1979	44.18605
1980	44.18605
1981	44.18605
1982	44.18605
1983	44.18605
1984	44.18605
1985	44.18605
1986	44.18605
1987	44.18605
1988	44.18605
1989	44.18605
1990	44.18605
1991	44.18605
1992	44.18605
1993	44.18605
1994	44.18605
1995	44.18605
1996	44.18605
1997	44.18605
1998	44.18605
1999	41.86047
2000	41.86047
2001	41.86047
2002	39.53488
2003	39.53488
2004	37.2093
2005	37.2093
2006	37.2093
2007	37.2093
2008	37.2093
2009	37.2093
2010	34.88372
2011	32.55814
2012	30.23256
2013	29.06977
2014	27.90698
2015	25.5814
2016	23.25581
2017	23.25581
2018	23.25581
2019	23.25581
2020	23.25581
2021	23.25581