Year	scale 1-100
1970	44.375
1971	44.375
1972	44.375
1973	44.375
1974	44.375
1975	44.375
1976	44.375
1977	44.375
1978	50.625
1979	50.625
1980	50.625
1981	50.625
1982	50.625
1983	50.625
1984	50.625
1985	50.625
1986	50.625
1987	53.75
1988	53.75
1989	53.75
1990	53.75
1991	53.75
1992	53.75
1993	53.75
1994	53.75
1995	53.75
1996	53.75
1997	53.75
1998	53.75
1999	53.75
2000	53.75
2001	53.75
2002	53.75
2003	53.75
2004	53.75
2005	53.75
2006	53.75
2007	53.75
2008	56.25
2009	56.25
2010	56.25
2011	66.875
2012	66.875
2013	66.875
2014	69.375
2015	69.375
2016	69.375
2017	69.375
2018	69.375
2019	69.375
2020	69.375
2021	69.375
2022	69.375
2023	69.375