Year	scale 1-100
1970	33.75
1971	33.75
1972	33.75
1973	33.75
1974	33.75
1975	33.75
1976	33.75
1977	33.75
1978	33.75
1979	33.75
1980	33.75
1981	33.75
1982	33.75
1983	33.75
1984	33.75
1985	33.75
1986	33.75
1987	33.75
1988	33.75
1989	33.75
1990	33.75
1991	33.75
1992	45.625
1993	45.625
1994	45.625
1995	48.125
1996	71.25
1997	71.25
1998	71.25
1999	71.25
2000	71.25
2001	71.25
2002	71.25
2003	71.25
2004	73.75
2005	73.75
2006	73.75
2007	73.75
2008	80
2009	80
2010	80
2011	80
2012	80
2013	80
2014	80
2015	80
2016	80
2017	80
2018	80
2019	80
2020	80
2021	80
2022	80
2023	80