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	78.125
2003	80.625
2004	86.875
2005	86.875
2006	86.875
2007	86.875
2008	86.875
2009	86.875
2010	86.875
2011	91.875
2012	91.875
2013	91.875
2014	91.875
2015	91.875
2016	91.875
2017	91.875
2018	91.875
2019	91.875
2020	91.875
2021	91.875
2022	91.875
2023	91.875