Year	scale 1-100
1970	35
1971	35
1972	35
1973	38.125
1974	38.125
1975	38.125
1976	38.125
1977	38.125
1978	44.375
1979	44.375
1980	44.375
1981	49.375
1982	49.375
1983	51.875
1984	51.875
1985	51.875
1986	51.875
1987	51.875
1988	51.875
1989	51.875
1990	51.875
1991	55
1992	55
1993	55
1994	55
1995	55
1996	55
1997	55
1998	55
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	63.75
2009	63.75
2010	63.75
2011	63.75
2012	63.75
2013	63.75
2014	63.75
2015	63.75
2016	63.75
2017	63.75
2018	63.75
2019	63.75
2020	66.875
2021	66.875
2022	72.5
2023	72.5