Year	scale 1-100
1970	29.375
1971	29.375
1972	29.375
1973	29.375
1974	29.375
1975	29.375
1976	29.375
1977	29.375
1978	29.375
1979	29.375
1980	29.375
1981	29.375
1982	29.375
1983	29.375
1984	29.375
1985	29.375
1986	26.875
1987	26.875
1988	26.875
1989	26.875
1990	26.875
1991	26.875
1992	26.875
1993	26.875
1994	26.875
1995	26.875
1996	30
1997	30
1998	30
1999	30
2000	30
2001	33.125
2002	33.125
2003	38.75
2004	38.75
2005	38.75
2006	38.75
2007	38.75
2008	38.75
2009	38.75
2010	38.75
2011	38.75
2012	38.75
2013	38.75
2014	38.75
2015	45
2016	45
2017	45
2018	45
2019	45
2020	45
2021	50.625
2022	50.625
2023	50.625