Year	scale 1-100
1970	25.625
1971	25.625
1972	25.625
1973	25.625
1974	25.625
1975	25.625
1976	25.625
1977	25.625
1978	25.625
1979	25.625
1980	25.625
1981	25.625
1982	25.625
1983	25.625
1984	28.75
1985	33.75
1986	33.75
1987	33.75
1988	38.75
1989	38.75
1990	38.75
1991	38.75
1992	41.875
1993	41.875
1994	59.375
1995	59.375
1996	61.875
1997	65
1998	70
1999	75.625
2000	78.75
2001	78.75
2002	78.75
2003	78.75
2004	78.75
2005	78.75
2006	78.75
2007	78.75
2008	78.75
2009	78.75
2010	78.75
2011	78.75
2012	81.875
2013	81.875
2014	88.125
2015	88.125
2016	88.125
2017	88.125
2018	88.125
2019	88.125
2020	88.125
2021	88.125
2022	88.125
2023	88.125