Year	scale 1-100
1970	51.875
1971	51.875
1972	51.875
1973	58.125
1974	58.125
1975	58.125
1976	61.25
1977	61.25
1978	61.25
1979	61.25
1980	61.25
1981	61.25
1982	61.25
1983	61.25
1984	61.25
1985	61.25
1986	61.25
1987	61.25
1988	61.25
1989	61.25
1990	61.25
1991	61.25
1992	61.25
1993	61.25
1994	61.25
1995	61.25
1996	61.25
1997	63.75
1998	63.75
1999	66.25
2000	66.25
2001	66.25
2002	66.25
2003	66.25
2004	66.25
2005	66.25
2006	66.25
2007	66.25
2008	66.25
2009	66.25
2010	66.25
2011	66.25
2012	66.25
2013	66.25
2014	66.25
2015	66.25
2016	66.25
2017	66.25
2018	66.25
2019	66.25
2020	66.25
2021	66.25
2022	68.75
2023	68.75