Year 2014-2016 = 100 1961 25.6 1962 26.78 1963 28.23 1964 29.17 1965 30.13 1966 32.35 1967 34.43 1968 34.7 1969 34.9 1970 37.99 1971 36.01 1972 41.23 1973 41.71 1974 42.83 1975 44.57 1976 49.47 1977 49.09 1978 48.08 1979 48.26 1980 48.15 1981 52.21 1982 50.73 1983 48.59 1984 51.03 1985 49.3 1986 47.84 1987 48.4 1988 49.34 1989 51.68 1990 51.54 1991 47.83 1992 45.33 1993 46.3 1994 47.83 1995 52.35 1996 52.3 1997 55.06 1998 57.43 1999 61.99 2000 60.85 2001 63.59 2002 61.55 2003 64.78 2004 69.76 2005 68.95 2006 73.04 2007 78.49 2008 78.12 2009 71.86 2010 91.47 2011 93.77 2012 93.87 2013 94.83 2014 98.92 2015 100.59 2016 100.49 2017 100.75 2018 100.31 2019 102.7 2020 101.67 2021 101.75 2022 102.18