Year 2004-2006 = 100 1961 24.48 1962 32.71 1963 23.99 1964 23.84 1965 26.79 1966 29.35 1967 35.55 1968 34.81 1969 37.49 1970 39.14 1971 39.99 1972 39.35 1973 41.02 1974 39.24 1975 44.02 1976 46.59 1977 48.59 1978 49.27 1979 52.94 1980 53.41 1981 58.37 1982 61.28 1983 60.98 1984 55.57 1985 66.26 1986 60.69 1987 60.54 1988 58.5 1989 66.34 1990 76.02 1991 86.39 1992 91.7 1993 64.29 1994 45.24 1995 54.34 1996 60.65 1997 63.39 1998 71.44 1999 77.8 2000 83.16 2001 79.16 2002 100.18 2003 93.84 2004 93.75 2005 100.61 2006 105.63 2007 106.87 2008 115.92 2009 135.39 2010 140.38 2011 150.5 2012 162.16 2013 165.22 2014 155.01 2015 150.3 2016 140.61