Year	scale 1-100
1970	20.625
1971	20.625
1972	20.625
1973	20.625
1974	20.625
1975	20.625
1976	20.625
1977	26.25
1978	26.25
1979	26.25
1980	26.25
1981	26.25
1982	26.25
1983	26.25
1984	26.25
1985	26.25
1986	26.25
1987	26.25
1988	26.25
1989	26.25
1990	26.25
1991	26.25
1992	26.25
1993	26.25
1994	28.75
1995	28.75
1996	28.75
1997	28.75
1998	28.75
1999	28.75
2000	28.75
2001	28.75
2002	28.75
2003	28.75
2004	28.75
2005	28.75
2006	31.875
2007	31.875
2008	31.875
2009	31.875
2010	31.875
2011	31.875
2012	31.875
2013	35
2014	35
2015	35
2016	37.5
2017	37.5
2018	40
2019	46.25
2020	55.625
2021	65
2022	68.125
2023	68.125