Year	scale 1-100
1970	46.25
1971	46.25
1972	49.375
1973	49.375
1974	49.375
1975	49.375
1976	49.375
1977	49.375
1978	49.375
1979	49.375
1980	49.375
1981	49.375
1982	49.375
1983	49.375
1984	49.375
1985	49.375
1986	54.375
1987	54.375
1988	54.375
1989	54.375
1990	54.375
1991	57.5
1992	57.5
1993	57.5
1994	57.5
1995	57.5
1996	57.5
1997	57.5
1998	57.5
1999	57.5
2000	57.5
2001	57.5
2002	57.5
2003	57.5
2004	72.5
2005	72.5
2006	72.5
2007	75
2008	75
2009	75
2010	75
2011	75
2012	75
2013	75
2014	75
2015	75
2016	75
2017	75
2018	75
2019	75
2020	75
2021	75
2022	75
2023	75