Year	scale 1-100
1970	18.75
1971	18.75
1972	18.75
1973	18.75
1974	18.75
1975	18.75
1976	21.875
1977	21.875
1978	45
1979	45
1980	50.625
1981	50.625
1982	50.625
1983	50.625
1984	50.625
1985	50.625
1986	50.625
1987	50.625
1988	50.625
1989	50.625
1990	50.625
1991	50.625
1992	50.625
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	53.75
2009	56.25
2010	56.25
2011	56.25
2012	56.25
2013	62.5
2014	62.5
2015	68.75
2016	68.75
2017	68.75
2018	68.75
2019	83.125
2020	83.125
2021	83.125
2022	83.125
2023	83.125