Year 2014-2016 = 100 1961 18.63 1962 18.91 1963 19.74 1964 19.57 1965 21.44 1966 21.22 1967 21.78 1968 24.23 1969 26.09 1970 27.67 1971 28.41 1972 29.15 1973 29.33 1974 31.27 1975 33.04 1976 34.43 1977 33.38 1978 31.94 1979 36.25 1980 36.16 1981 36.54 1982 36.77 1983 37.11 1984 37.07 1985 40.15 1986 41.45 1987 43.37 1988 45.94 1989 49.23 1990 53.35 1991 55.75 1992 58.93 1993 62.03 1994 63.26 1995 62.9 1996 62.9 1997 62.67 1998 61.92 1999 59.8 2000 59.71 2001 61.2 2002 63.39 2003 64.29 2004 66.86 2005 68.97 2006 69.42 2007 71.24 2008 72.69 2009 74.81 2010 80.47 2011 82.85 2012 86.23 2013 90.08 2014 96.27 2015 100.75 2016 102.98 2017 101.08 2018 99.81 2019 96.88 2020 102.84 2021 102.8 2022 102.8