Year	scale 1-100
1970	51.25
1971	51.25
1972	51.25
1973	51.25
1974	51.25
1975	51.25
1976	51.25
1977	51.25
1978	51.25
1979	51.25
1980	53.75
1981	53.75
1982	63.125
1983	63.125
1984	63.125
1985	63.125
1986	63.125
1987	63.125
1988	63.125
1989	63.125
1990	63.125
1991	63.125
1992	63.125
1993	65.625
1994	65.625
1995	65.625
1996	65.625
1997	71.875
1998	71.875
1999	71.875
2000	71.875
2001	76.875
2002	76.875
2003	76.875
2004	76.875
2005	76.875
2006	76.875
2007	76.875
2008	76.875
2009	76.875
2010	76.875
2011	76.875
2012	79.375
2013	79.375
2014	79.375
2015	79.375
2016	79.375
2017	79.375
2018	79.375
2019	79.375
2020	79.375
2021	79.375
2022	79.375
2023	82.5