Year	scale 1-100
1970	58.75
1971	58.75
1972	58.75
1973	58.75
1974	58.75
1975	58.75
1976	58.75
1977	58.75
1978	58.75
1979	58.75
1980	58.75
1981	58.75
1982	58.75
1983	58.75
1984	58.75
1985	58.75
1986	58.75
1987	58.75
1988	58.75
1989	58.75
1990	61.25
1991	61.25
1992	61.25
1993	63.75
1994	63.75
1995	63.75
1996	63.75
1997	63.75
1998	63.75
1999	63.75
2000	63.75
2001	63.75
2002	63.75
2003	63.75
2004	76.25
2005	76.25
2006	78.75
2007	78.75
2008	81.875
2009	81.875
2010	91.25
2011	94.375
2012	94.375
2013	94.375
2014	94.375
2015	94.375
2016	94.375
2017	94.375
2018	94.375
2019	94.375
2020	85
2021	85
2022	85
2023	87.5