Year	scale 1-100
1970	17.5
1971	17.5
1972	17.5
1973	17.5
1974	17.5
1975	17.5
1976	17.5
1977	17.5
1978	17.5
1979	17.5
1980	17.5
1981	17.5
1982	17.5
1983	17.5
1984	17.5
1985	17.5
1986	17.5
1987	17.5
1988	17.5
1989	17.5
1990	17.5
1991	17.5
1992	17.5
1993	17.5
1994	17.5
1995	17.5
1996	17.5
1997	17.5
1998	17.5
1999	26.875
2000	26.875
2001	26.875
2002	26.875
2003	26.875
2004	26.875
2005	26.875
2006	26.875
2007	26.875
2008	26.875
2009	26.875
2010	26.875
2011	26.875
2012	26.875
2013	26.875
2014	26.875
2015	26.875
2016	26.875
2017	26.875
2018	30
2019	59.375
2020	82.5
2021	82.5
2022	82.5
2023	82.5