Year 2014-2016 = 100 1961 31.25 1962 32.96 1963 35.9 1964 33.5 1965 31.92 1966 35.32 1967 38.58 1968 36.64 1969 39.45 1970 38.77 1971 36.35 1972 35.93 1973 37.46 1974 39.59 1975 40.54 1976 44.76 1977 44.69 1978 47.93 1979 48.29 1980 44.54 1981 47.96 1982 48.88 1983 47.68 1984 48.95 1985 49.84 1986 51.12 1987 48.48 1988 49.33 1989 45.86 1990 50.98 1991 52.87 1992 53.03 1993 53.09 1994 55.66 1995 58.99 1996 57.09 1997 61.91 1998 66.67 1999 68.32 2000 69.14 2001 69.29 2002 68.91 2003 71.49 2004 73.94 2005 83 2006 82.05 2007 89.82 2008 91.03 2009 76.08 2010 88.2 2011 92.78 2012 86.64 2013 94.03 2014 95.14 2015 103.91 2016 100.95 2017 105.91 2018 97.51 2019 112.42 2020 108.57 2021 108.4 2022 109.39