Year	scale 1-100
1970	57.5
1971	57.5
1972	57.5
1973	57.5
1974	60
1975	60
1976	60
1977	60
1978	60
1979	60
1980	60
1981	60
1982	60
1983	60
1984	60
1985	60
1986	60
1987	60
1988	63.125
1989	63.125
1990	63.125
1991	65.625
1992	65.625
1993	65.625
1994	65.625
1995	65.625
1996	68.75
1997	68.75
1998	75
1999	75
2000	78.125
2001	78.125
2002	78.125
2003	78.125
2004	75
2005	75
2006	77.5
2007	77.5
2008	77.5
2009	77.5
2010	77.5
2011	77.5
2012	80.625
2013	80.625
2014	80.625
2015	80.625
2016	80.625
2017	80.625
2018	80.625
2019	80.625
2020	80.625
2021	80.625
2022	80.625
2023	80.625