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	20.625
1978	20.625
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	26.25
1995	26.25
1996	26.25
1997	26.25
1998	26.25
1999	26.25
2000	26.25
2001	26.25
2002	26.25
2003	26.25
2004	26.25
2005	26.25
2006	26.25
2007	26.25
2008	28.75
2009	28.75
2010	31.875
2011	31.875
2012	31.875
2013	31.875
2014	31.875
2015	31.875
2016	31.875
2017	31.875
2018	31.875
2019	40.625
2020	46.875
2021	46.875
2022	46.875
2023	59.375