Year	scale 1-100
1970	36.25
1971	36.25
1972	36.25
1973	36.25
1974	36.25
1975	36.25
1976	36.25
1977	36.25
1978	36.25
1979	36.25
1980	36.25
1981	36.25
1982	36.25
1983	36.25
1984	38.75
1985	38.75
1986	38.75
1987	38.75
1988	38.75
1989	38.75
1990	38.75
1991	38.75
1992	38.75
1993	38.75
1994	38.75
1995	38.75
1996	38.75
1997	38.75
1998	38.75
1999	38.75
2000	38.75
2001	38.75
2002	38.75
2003	38.75
2004	38.75
2005	38.75
2006	38.75
2007	38.75
2008	38.75
2009	38.75
2010	50
2011	50
2012	50
2013	50
2014	50
2015	50
2016	50
2017	50
2018	50
2019	50
2020	50
2021	50
2022	50
2023	50