Year	scale 1-100
1970	58.75
1971	58.75
1972	58.75
1973	58.75
1974	58.75
1975	58.75
1976	58.75
1977	58.75
1978	58.75
1979	58.75
1980	58.75
1981	58.75
1982	58.75
1983	58.75
1984	61.25
1985	61.25
1986	61.25
1987	61.25
1988	61.25
1989	61.25
1990	61.25
1991	61.25
1992	61.25
1993	61.25
1994	61.25
1995	61.25
1996	61.25
1997	61.25
1998	67.5
1999	67.5
2000	67.5
2001	67.5
2002	67.5
2003	67.5
2004	67.5
2005	81.25
2006	81.25
2007	81.25
2008	81.25
2009	81.25
2010	81.25
2011	81.25
2012	81.25
2013	81.25
2014	81.25
2015	81.25
2016	81.25
2017	81.25
2018	81.25
2019	81.25
2020	81.25
2021	81.25
2022	81.25
2023	81.25