Year	scale 1-100
1970	60.625
1971	60.625
1972	60.625
1973	60.625
1974	60.625
1975	60.625
1976	60.625
1977	66.25
1978	69.375
1979	69.375
1980	69.375
1981	75
1982	75
1983	75
1984	75
1985	75
1986	75
1987	81.25
1988	81.25
1989	81.25
1990	81.25
1991	81.25
1992	81.25
1993	81.25
1994	84.375
1995	84.375
1996	86.875
1997	86.875
1998	86.875
1999	86.875
2000	86.875
2001	86.875
2002	86.875
2003	89.375
2004	89.375
2005	89.375
2006	91.875
2007	91.875
2008	91.875
2009	91.875
2010	91.875
2011	91.875
2012	91.875
2013	91.875
2014	91.875
2015	91.875
2016	91.875
2017	94.375
2018	94.375
2019	94.375
2020	97.5
2021	97.5
2022	97.5
2023	97.5