Year	scale 1-100
1970	51.875
1971	51.875
1972	51.875
1973	56.875
1974	60
1975	63.125
1976	69.375
1977	69.375
1978	69.375
1979	69.375
1980	69.375
1981	69.375
1982	72.5
1983	72.5
1984	72.5
1985	72.5
1986	72.5
1987	75
1988	75
1989	75
1990	78.125
1991	78.125
1992	78.125
1993	78.125
1994	78.125
1995	78.125
1996	81.25
1997	83.75
1998	83.75
1999	83.75
2000	86.25
2001	86.25
2002	86.25
2003	88.75
2004	88.75
2005	88.75
2006	91.875
2007	91.875
2008	91.875
2009	91.875
2010	95
2011	95
2012	95
2013	95
2014	95
2015	97.5
2016	97.5
2017	97.5
2018	97.5
2019	97.5
2020	97.5
2021	97.5
2022	97.5
2023	97.5