Year scale 1-100 1970 58.125 1971 58.125 1972 58.125 1973 58.125 1974 58.125 1975 58.125 1976 58.125 1977 58.125 1978 58.125 1979 58.125 1980 58.125 1981 58.125 1982 58.125 1983 58.125 1984 58.125 1985 58.125 1986 58.125 1987 58.125 1988 58.125 1989 58.125 1990 58.125 1991 58.125 1992 58.125 1993 58.125 1994 58.125 1995 58.125 1996 58.125 1997 58.125 1998 58.125 1999 61.25 2000 66.875 2001 66.875 2002 66.875 2003 76.25 2004 76.25 2005 78.75 2006 78.75 2007 78.75 2008 78.75 2009 78.75 2010 81.875 2011 81.875 2012 81.875 2013 81.875 2014 81.875 2015 81.875 2016 88.125 2017 88.125 2018 85 2019 85 2020 85 2021 85 2022 85 2023 85