Year 2004-2006 = 100 1961 23.81 1962 24.27 1963 25.72 1964 25.18 1965 26.12 1966 26.64 1967 26.89 1968 27.9 1969 27.24 1970 27.99 1971 27.23 1972 30.07 1973 30.54 1974 31.64 1975 33.18 1976 33.6 1977 33.59 1978 34.71 1979 33.27 1980 30.1 1981 30.81 1982 33.26 1983 32.23 1984 34.37 1985 36.06 1986 42.11 1987 43.54 1988 49.87 1989 51.43 1990 54.56 1991 62.5 1992 60.35 1993 59.96 1994 60.88 1995 55.1 1996 58.59 1997 65.99 1998 70.17 1999 74.94 2000 81.59 2001 84.38 2002 86.74 2003 90.06 2004 93.96 2005 101.46 2006 104.58 2007 107.57 2008 115.08 2009 124.95 2010 129.67 2011 132.95 2012 130.6 2013 136.37 2014 139.06 2015 142.51 2016 143.11