Year	scale 1-100
1970	43.125
1971	43.125
1972	55
1973	55
1974	55
1975	55
1976	55
1977	55
1978	55
1979	55
1980	55
1981	55
1982	60.625
1983	60.625
1984	60.625
1985	60.625
1986	60.625
1987	60.625
1988	60.625
1989	60.625
1990	60.625
1991	60.625
1992	63.125
1993	63.125
1994	63.125
1995	63.125
1996	63.125
1997	63.125
1998	63.125
1999	63.125
2000	63.125
2001	69.375
2002	69.375
2003	69.375
2004	72.5
2005	72.5
2006	72.5
2007	72.5
2008	72.5
2009	72.5
2010	72.5
2011	72.5
2012	72.5
2013	75
2014	75
2015	75
2016	75
2017	75
2018	75
2019	75
2020	75
2021	75
2022	75
2023	75