Year	scale 1-100
1970	58.75
1971	58.75
1972	58.75
1973	58.75
1974	58.75
1975	58.75
1976	58.75
1977	58.75
1978	58.75
1979	58.75
1980	58.75
1981	58.75
1982	55.625
1983	55.625
1984	55.625
1985	55.625
1986	55.625
1987	55.625
1988	60.625
1989	60.625
1990	60.625
1991	60.625
1992	60.625
1993	60.625
1994	60.625
1995	60.625
1996	60.625
1997	63.75
1998	63.75
1999	63.75
2000	63.75
2001	63.75
2002	63.75
2003	63.75
2004	63.75
2005	63.75
2006	63.75
2007	63.75
2008	72.5
2009	72.5
2010	72.5
2011	72.5
2012	72.5
2013	72.5
2014	75.625
2015	86.25
2016	86.25
2017	86.25
2018	86.25
2019	86.25
2020	86.25
2021	86.25
2022	86.25
2023	86.25