Year	scale 1-100
1970	55.625
1971	55
1972	55
1973	58.125
1974	58.125
1975	58.125
1976	58.125
1977	58.125
1978	58.125
1979	58.125
1980	58.125
1981	58.125
1982	58.125
1983	58.125
1984	58.125
1985	58.125
1986	58.125
1987	58.125
1988	58.125
1989	58.125
1990	58.125
1991	58.125
1992	58.125
1993	63.75
1994	66.875
1995	70
1996	70
1997	70
1998	70
1999	70
2000	73.125
2001	73.125
2002	73.125
2003	73.125
2004	73.125
2005	73.125
2006	73.125
2007	73.125
2008	73.125
2009	73.125
2010	73.125
2011	73.125
2012	73.125
2013	73.125
2014	75.625
2015	75.625
2016	75.625
2017	75.625
2018	75.625
2019	75.625
2020	75.625
2021	75.625
2022	75.625
2023	75.625