Year 2014-2016 = 100 1961 46.7 1962 46.2 1963 47.88 1964 48.99 1965 50.06 1966 50.33 1967 52.08 1968 52.46 1969 53.71 1970 55.68 1971 57.11 1972 58.39 1973 58.92 1974 59.85 1975 61.3 1976 62.25 1977 61.6 1978 63.21 1979 65.97 1980 66.25 1981 65.77 1982 67.32 1983 69.21 1984 69.57 1985 69.81 1986 69.36 1987 67.6 1988 66.49 1989 66.25 1990 63.08 1991 62.11 1992 60.3 1993 59.72 1994 59.3 1995 57.2 1996 58.47 1997 61.5 1998 60.66 1999 62.35 2000 65.75 2001 64.44 2002 65.54 2003 67 2004 68.66 2005 72.34 2006 72.37 2007 79.3 2008 76.76 2009 85.08 2010 90.06 2011 94.96 2012 95.9 2013 100.45 2014 101.78 2015 98.91 2016 99.31 2017 94.51 2018 89.76 2019 81.32 2020 74.19 2021 79.41 2022 77.85