Year	scale 1-100
1970	31.875
1971	31.875
1972	31.875
1973	31.875
1974	31.875
1975	31.875
1976	31.875
1977	31.875
1978	31.875
1979	31.875
1980	31.875
1981	31.875
1982	31.875
1983	31.875
1984	40.625
1985	40.625
1986	40.625
1987	40.625
1988	40.625
1989	40.625
1990	46.25
1991	46.25
1992	46.25
1993	46.25
1994	46.25
1995	46.25
1996	46.25
1997	46.25
1998	46.25
1999	46.25
2000	46.25
2001	46.25
2002	46.25
2003	46.25
2004	46.25
2005	46.25
2006	46.25
2007	46.25
2008	46.25
2009	46.25
2010	46.25
2011	46.25
2012	46.25
2013	51.875
2014	51.875
2015	51.875
2016	51.875
2017	51.875
2018	51.875
2019	51.875
2020	51.875
2021	51.875
2022	51.875
2023	58.125