Year	scale 1-100
1970	30.625
1971	30.625
1972	30.625
1973	30.625
1974	30.625
1975	32.5
1976	38.75
1977	38.75
1978	38.75
1979	38.75
1980	38.75
1981	38.75
1982	38.75
1983	38.75
1984	38.75
1985	38.75
1986	38.75
1987	38.75
1988	59.375
1989	59.375
1990	59.375
1991	59.375
1992	62.5
1993	62.5
1994	62.5
1995	65
1996	65
1997	65
1998	65
1999	65
2000	65
2001	65
2002	65
2003	65
2004	70
2005	70
2006	70
2007	70
2008	70
2009	73.125
2010	73.125
2011	73.125
2012	73.125
2013	73.125
2014	73.125
2015	73.125
2016	73.125
2017	73.125
2018	76.25
2019	76.25
2020	76.25
2021	79.375
2022	79.375
2023	79.375