Year scale 1-100 1970 56.875 1971 56.875 1972 56.875 1973 56.875 1974 56.875 1975 56.875 1976 56.875 1977 56.875 1978 56.875 1979 56.875 1980 56.875 1981 56.875 1982 56.875 1983 56.875 1984 56.875 1985 56.875 1986 56.875 1987 56.875 1988 56.875 1989 59.375 1990 59.375 1991 59.375 1992 59.375 1993 59.375 1994 59.375 1995 62.5 1996 62.5 1997 62.5 1998 62.5 1999 62.5 2000 62.5 2001 62.5 2002 65 2003 65 2004 70 2005 70 2006 72.5 2007 72.5 2008 69.375 2009 69.375 2010 69.375 2011 69.375 2012 75.625 2013 75.625 2014 75.625 2015 75.625 2016 75.625 2017 75.625 2018 75.625 2019 75.625 2020 75.625 2021 75.625 2022 78.125 2023 78.125