Year	scale 1-100
1970	35
1971	35
1972	35
1973	35
1974	35
1975	35
1976	35
1977	35
1978	35
1979	35
1980	35
1981	35
1982	35
1983	35
1984	35
1985	35
1986	35
1987	35
1988	35
1989	35
1990	35
1991	41.25
1992	41.25
1993	41.25
1994	41.25
1995	41.25
1996	41.25
1997	43.75
1998	43.75
1999	43.75
2000	43.75
2001	43.75
2002	43.75
2003	43.75
2004	43.75
2005	43.75
2006	43.75
2007	43.75
2008	43.75
2009	55.625
2010	55.625
2011	55.625
2012	49.375
2013	49.375
2014	49.375
2015	49.375
2016	49.375
2017	49.375
2018	67.5
2019	67.5
2020	67.5
2021	67.5
2022	67.5
2023	67.5