Year	scale 1-100
1970	66.875
1971	66.875
1972	66.875
1973	66.875
1974	66.875
1975	70
1976	70
1977	70
1978	70
1979	72.5
1980	72.5
1981	81.25
1982	81.25
1983	81.25
1984	81.25
1985	81.25
1986	81.25
1987	81.25
1988	81.25
1989	81.25
1990	81.25
1991	81.25
1992	81.25
1993	81.25
1994	81.25
1995	83.75
1996	83.75
1997	83.75
1998	83.75
1999	83.75
2000	83.75
2001	83.75
2002	83.75
2003	83.75
2004	83.75
2005	83.75
2006	83.75
2007	83.75
2008	83.75
2009	83.75
2010	83.75
2011	83.75
2012	83.75
2013	83.75
2014	83.75
2015	83.75
2016	83.75
2017	83.75
2018	91.25
2019	91.25
2020	91.25
2021	91.25
2022	91.25
2023	91.25