Year 2004-2006 = 100 1961 30.27 1962 30.6 1963 31.57 1964 32.52 1965 32.62 1966 32.01 1967 32.57 1968 30.78 1969 34.03 1970 37.24 1971 38.28 1972 37.17 1973 37.83 1974 38.69 1975 40.17 1976 42.3 1977 44.27 1978 47.6 1979 54.47 1980 55.54 1981 61.66 1982 60.88 1983 61.27 1984 69.93 1985 72.28 1986 70 1987 55.28 1988 57.82 1989 61.08 1990 61.39 1991 65.75 1992 71.05 1993 69.46 1994 70.31 1995 76.97 1996 78.34 1997 81.93 1998 83.28 1999 78.53 2000 80.98 2001 77.8 2002 78.41 2003 80.5 2004 91.45 2005 103.43 2006 105.12 2007 112.98 2008 117.78 2009 107.81 2010 111.16 2011 112.58 2012 112.6 2013 115.75 2014 117.86 2015 116.82 2016 112.9