Year	scale 1-100
1970	55.625
1971	55
1972	55
1973	58.125
1974	58.125
1975	58.125
1976	58.125
1977	58.125
1978	58.125
1979	58.125
1980	58.125
1981	58.125
1982	58.125
1983	58.125
1984	58.125
1985	58.125
1986	58.125
1987	58.125
1988	58.125
1989	58.125
1990	58.125
1991	58.125
1992	58.125
1993	58.125
1994	58.125
1995	58.125
1996	61.25
1997	61.25
1998	61.25
1999	61.25
2000	61.25
2001	61.25
2002	61.25
2003	64.375
2004	64.375
2005	76.875
2006	79.375
2007	79.375
2008	79.375
2009	79.375
2010	79.375
2011	82.5
2012	82.5
2013	82.5
2014	82.5
2015	82.5
2016	82.5
2017	82.5
2018	85
2019	85
2020	85
2021	87.5
2022	87.5
2023	90.625