Year 2014-2016 = 100 1961 26.7 1962 27.45 1963 29.06 1964 31.17 1965 34.51 1966 37.92 1967 38.56 1968 38.84 1969 32.23 1970 29.73 1971 31.45 1972 30.34 1973 35.04 1974 34.61 1975 29.3 1976 58.02 1977 50.08 1978 41.44 1979 33.82 1980 33.33 1981 47.49 1982 42.69 1983 41.47 1984 43.71 1985 46.77 1986 44.83 1987 52.13 1988 52.9 1989 57.61 1990 57.42 1991 48.18 1992 54.07 1993 52.55 1994 45.58 1995 78.6 1996 104.69 1997 86.44 1998 129.76 1999 126.01 2000 70.09 2001 74.33 2002 75 2003 87.07 2004 87.8 2005 89.12 2006 88.86 2007 88.16 2008 89.2 2009 93.96 2010 95.46 2011 99.92 2012 93.9 2013 95.54 2014 98.46 2015 99.59 2016 101.95 2017 100.63 2018 97.93 2019 96.84 2020 94.09 2021 91.86 2022 92.34