Year scale 1-100 1970 49.375 1971 49.375 1972 49.375 1973 49.375 1974 49.375 1975 49.375 1976 49.375 1977 49.375 1978 49.375 1979 49.375 1980 49.375 1981 49.375 1982 49.375 1983 60 1984 60 1985 60 1986 60 1987 60 1988 60 1989 60 1990 60 1991 65.625 1992 65.625 1993 65.625 1994 65.625 1995 65.625 1996 65.625 1997 65.625 1998 68.125 1999 70.625 2000 70.625 2001 70.625 2002 70.625 2003 70.625 2004 70.625 2005 70.625 2006 73.75 2007 80 2008 82.5 2009 82.5 2010 82.5 2011 82.5 2012 82.5 2013 82.5 2014 85 2015 85 2016 85 2017 85 2018 85 2019 85 2020 85 2021 85 2022 85 2023 85