Year 2014-2016 = 100 1961 22.43 1962 23.35 1963 23.33 1964 21.01 1965 24.17 1966 16.4 1967 18.07 1968 23.11 1969 21.47 1970 22.07 1971 22.99 1972 21.05 1973 20.04 1974 21.54 1975 23.56 1976 22.13 1977 18.51 1978 18.67 1979 20.99 1980 22.77 1981 23.21 1982 21.4 1983 22.35 1984 24.02 1985 29.53 1986 29.68 1987 29.97 1988 28.59 1989 31.8 1990 31.08 1991 36.53 1992 39.02 1993 37.34 1994 34.79 1995 38.88 1996 45.69 1997 37.28 1998 41.78 1999 43.84 2000 41.01 2001 44.17 2002 45.61 2003 53.44 2004 58.37 2005 59.95 2006 63.27 2007 58.32 2008 59.26 2009 73.34 2010 76.69 2011 84.76 2012 89.77 2013 98.04 2014 96.95 2015 100.26 2016 102.79 2017 102.87 2018 108.63 2019 112.36 2020 112.5 2021 104.83 2022 111.22