Year 2004-2006 = 100 1961 21.53 1962 24 1963 24.95 1964 26.2 1965 25.46 1966 22.44 1967 24.98 1968 25.31 1969 25.12 1970 26 1971 26.72 1972 25.12 1973 27.45 1974 27.76 1975 29.13 1976 29.6 1977 30.41 1978 33.31 1979 33.76 1980 39.49 1981 42.82 1982 45.12 1983 46 1984 47.3 1985 48.47 1986 48.64 1987 47.52 1988 46.29 1989 43.93 1990 43.39 1991 42.07 1992 47.59 1993 51.69 1994 55.72 1995 57.55 1996 58.9 1997 58.41 1998 59.34 1999 68 2000 75.01 2001 79.85 2002 82.5 2003 87.63 2004 91.41 2005 98.07 2006 110.53 2007 117.01 2008 126.3 2009 129.81 2010 131.81 2011 129.45 2012 125.39 2013 129.98 2014 132.82 2015 135.35 2016 135.83