Year	scale 1-100
1970	45.625
1971	45.625
1972	45.625
1973	45.625
1974	45.625
1975	45.625
1976	45.625
1977	45.625
1978	45.625
1979	45.625
1980	45.625
1981	45.625
1982	45.625
1983	45.625
1984	45.625
1985	45.625
1986	45.625
1987	45.625
1988	45.625
1989	45.625
1990	45.625
1991	48.75
1992	48.75
1993	48.75
1994	48.75
1995	48.75
1996	48.75
1997	48.75
1998	48.75
1999	48.75
2000	48.75
2001	48.75
2002	56.875
2003	66.25
2004	71.25
2005	80
2006	80
2007	80
2008	80
2009	80
2010	80
2011	80
2012	80
2013	80
2014	80
2015	82.5
2016	82.5
2017	82.5
2018	82.5
2019	82.5
2020	82.5
2021	82.5
2022	82.5
2023	82.5