Year	scale 1-100
1970	28.75
1971	28.75
1972	28.75
1973	28.75
1974	28.75
1975	28.75
1976	28.75
1977	28.75
1978	28.75
1979	28.75
1980	28.75
1981	28.75
1982	28.75
1983	28.75
1984	28.75
1985	28.75
1986	28.75
1987	28.75
1988	28.75
1989	28.75
1990	28.75
1991	28.75
1992	31.25
1993	43.125
1994	43.125
1995	43.125
1996	43.125
1997	43.125
1998	43.125
1999	43.125
2000	43.125
2001	43.125
2002	43.125
2003	43.125
2004	43.125
2005	52.5
2006	72.5
2007	75.625
2008	75.625
2009	75.625
2010	78.125
2011	78.125
2012	78.125
2013	78.125
2014	78.125
2015	78.125
2016	78.125
2017	78.125
2018	78.125
2019	78.125
2020	78.125
2021	78.125
2022	78.125
2023	80.625