Year	scale 1-100
1970	43.75
1971	43.75
1972	43.75
1973	63.75
1974	63.75
1975	63.75
1976	63.75
1977	63.75
1978	63.75
1979	63.75
1980	63.75
1981	63.75
1982	63.75
1983	63.75
1984	63.75
1985	63.75
1986	63.75
1987	63.75
1988	63.75
1989	63.75
1990	63.75
1991	63.75
1992	63.75
1993	63.75
1994	63.75
1995	63.75
1996	63.75
1997	63.75
1998	63.75
1999	63.75
2000	63.75
2001	63.75
2002	63.75
2003	63.75
2004	63.75
2005	63.75
2006	63.75
2007	63.75
2008	63.75
2009	63.75
2010	63.75
2011	63.75
2012	63.75
2013	63.75
2014	63.75
2015	63.75
2016	78.75
2017	78.75
2018	81.25
2019	81.25
2020	81.25
2021	81.25
2022	81.25
2023	81.25