Year	scale 1-100
1970	65.625
1971	65.625
1972	65.625
1973	65.625
1974	65.625
1975	68.75
1976	68.75
1977	68.75
1978	68.75
1979	68.75
1980	71.875
1981	71.875
1982	71.875
1983	71.875
1984	71.875
1985	71.875
1986	75
1987	75
1988	75
1989	78.125
1990	83.125
1991	83.125
1992	83.125
1993	83.125
1994	86.25
1995	86.25
1996	86.25
1997	86.25
1998	86.25
1999	89.375
2000	89.375
2001	89.375
2002	89.375
2003	89.375
2004	89.375
2005	89.375
2006	89.375
2007	92.5
2008	92.5
2009	95
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	100
2023	100