Year	scale 1-100
1970	58.125
1971	58.125
1972	58.125
1973	60.625
1974	60.625
1975	60.625
1976	60.625
1977	60.625
1978	66.25
1979	66.25
1980	66.25
1981	66.25
1982	66.25
1983	66.25
1984	66.25
1985	66.25
1986	66.25
1987	68.75
1988	68.75
1989	68.75
1990	68.75
1991	68.75
1992	68.75
1993	68.75
1994	68.75
1995	68.75
1996	68.75
1997	68.75
1998	68.75
1999	68.75
2000	71.25
2001	71.25
2002	71.25
2003	71.25
2004	71.25
2005	71.25
2006	71.25
2007	71.25
2008	71.25
2009	71.25
2010	71.25
2011	71.25
2012	71.25
2013	71.25
2014	71.25
2015	71.25
2016	71.25
2017	71.25
2018	71.25
2019	71.25
2020	71.25
2021	71.25
2022	71.25
2023	71.25