Year 2014-2016 = 100 1961 19.13 1962 20.45 1963 19.87 1964 21.57 1965 22.35 1966 23.37 1967 24.1 1968 23.03 1969 24.74 1970 25.06 1971 25.92 1972 24.81 1973 25.35 1974 25.63 1975 21.7 1976 17.03 1977 16.09 1978 15.1 1979 13.53 1980 14.04 1981 12.59 1982 12.55 1983 12.55 1984 12.73 1985 12.72 1986 13.32 1987 13.4 1988 13.41 1989 13.25 1990 12.9 1991 13.8 1992 14.79 1993 14.72 1994 18.03 1995 18.06 1996 18.54 1997 18.07 1998 21.99 1999 20.9 2000 25.49 2001 30.81 2002 36.2 2003 40.15 2004 45.52 2005 49.15 2006 50.36 2007 58.33 2008 62.17 2009 81.2 2010 86.14 2011 95.31 2012 76.61 2013 108.18 2014 94 2015 100.89 2016 105.11 2017 104.58 2018 107.34 2019 109.43 2020 115.08 2021 116.22 2022 122.45