Year	Percent
1961	14.49275
1962	14.49275
1963	14.49275
1964	14.49275
1965	14.49275
1966	14.49275
1967	14.49275
1968	14.49275
1969	14.49275
1970	14.49275
1971	14.49275
1972	14.49275
1973	14.49275
1974	14.49275
1975	14.49275
1976	14.49275
1977	14.49275
1978	14.49275
1979	14.49275
1980	14.49275
1981	14.49275
1982	14.49275
1983	14.49275
1984	14.49275
1985	14.49275
1986	14.49275
1987	14.49275
1988	14.49275
1989	14.49275
1990	14.49275
1991	14.49275
1992	14.08451
1993	14.08451
1994	14.08451
1995	14.08451
1996	14.08451
1997	14.08451
1998	14.08451
1999	14.08451
2000	13.94366
2001	13.78873
2002	13.64789
2003	13.30556
2004	12.9863
2005	12.66216
2006	12.52703
2007	12.21333
2008	11.92105
2009	11.77632
2010	11.61417
2011	11.39505
2012	11.22078
2013	11.07792
2014	10.93385
2015	10.69409
2016	10.55199
2017	10.39744
2018	10.41131
2019	10.38462
2020	10.31847
2021	10.25316