Year	scale 1-100
1970	67.5
1971	67.5
1972	67.5
1973	67.5
1974	67.5
1975	67.5
1976	67.5
1977	67.5
1978	67.5
1979	67.5
1980	67.5
1981	67.5
1982	67.5
1983	67.5
1984	67.5
1985	67.5
1986	67.5
1987	67.5
1988	67.5
1989	67.5
1990	67.5
1991	67.5
1992	67.5
1993	67.5
1994	67.5
1995	67.5
1996	67.5
1997	70.625
1998	70.625
1999	70.625
2000	70.625
2001	70.625
2002	78.75
2003	81.875
2004	81.875
2005	88.125
2006	90.625
2007	90.625
2008	90.625
2009	96.875
2010	96.875
2011	96.875
2012	96.875
2013	96.875
2014	96.875
2015	93.75
2016	93.75
2017	93.75
2018	93.75
2019	93.75
2020	93.75
2021	93.75
2022	93.75
2023	93.75