Year 2004-2006 = 100 1961 44.76 1962 41.2 1963 37.29 1964 39.59 1965 52.62 1966 51.66 1967 59.26 1968 43.58 1969 44.49 1970 47.03 1971 54.18 1972 40.7 1973 53.79 1974 65.75 1975 39.68 1976 52.29 1977 53 1978 61.73 1979 56.53 1980 51.46 1981 64.99 1982 60.4 1983 49.94 1984 73.05 1985 73.55 1986 78.92 1987 84.23 1988 89.77 1989 62.17 1990 51.37 1991 62.13 1992 63.45 1993 63.53 1994 64.29 1995 64.55 1996 75.2 1997 75.49 1998 79.23 1999 79.84 2000 74.12 2001 74.61 2002 75.3 2003 75.91 2004 94.21 2005 94.92 2006 110.87 2007 114.96 2008 116.03 2009 116.32 2010 53.85 2011 54.19 2012 53.98 2013 53.85 2014 54.34 2015 54.38 2016 54.21