Year	scale 1-100
1970	55.625
1971	55
1972	55
1973	55
1974	55
1975	55
1976	55
1977	55
1978	55
1979	55
1980	55
1981	55
1982	55
1983	55
1984	55
1985	55
1986	55
1987	55
1988	55
1989	55
1990	55
1991	57.5
1992	57.5
1993	57.5
1994	57.5
1995	57.5
1996	57.5
1997	60.625
1998	60.625
1999	63.75
2000	63.75
2001	63.75
2002	63.75
2003	70
2004	70
2005	70
2006	76.25
2007	78.75
2008	78.75
2009	78.75
2010	78.75
2011	81.875
2012	81.875
2013	81.875
2014	81.875
2015	81.875
2016	81.875
2017	84.375
2018	87.5
2019	87.5
2020	87.5
2021	87.5
2022	87.5
2023	90.625