Year scale 1-100 1970 38.125 1971 38.125 1972 38.125 1973 38.125 1974 38.125 1975 38.125 1976 44.375 1977 44.375 1978 44.375 1979 44.375 1980 44.375 1981 44.375 1982 44.375 1983 44.375 1984 44.375 1985 41.25 1986 41.25 1987 38.125 1988 38.125 1989 38.125 1990 38.125 1991 38.125 1992 38.125 1993 38.125 1994 38.125 1995 38.125 1996 38.125 1997 38.125 1998 38.125 1999 38.125 2000 38.125 2001 38.125 2002 38.125 2003 38.125 2004 38.125 2005 38.125 2006 38.125 2007 38.125 2008 38.125 2009 38.125 2010 44.375 2011 44.375 2012 44.375 2013 46.875 2014 46.875 2015 46.875 2016 46.875 2017 50 2018 52.5 2019 52.5 2020 55.625 2021 55.625 2022 58.75 2023 58.75