Year 2014-2016 = 100 1966 44.89 1967 43.9 1968 43.83 1969 42.64 1970 37.64 1971 42.43 1972 44.59 1973 44.49 1974 46.01 1975 46.13 1976 46.02 1977 45.53 1978 32.38 1979 43.44 1980 43.44 1981 44.93 1982 45.31 1983 41.33 1984 43.72 1985 44.1 1986 44.66 1987 45.76 1988 45.99 1989 46.03 1990 46.07 1991 46.7 1992 46.9 1993 47.73 1994 48.2 1995 48.34 1996 47.88 1997 48.25 1998 47.88 1999 47.89 2000 48.29 2001 48.44 2002 48.55 2003 48.57 2004 48.43 2005 47.86 2006 47.18 2007 48.16 2008 48 2009 48 2010 48 2011 49.33 2012 49.33 2013 51.09 2014 96.82 2015 100.19 2016 102.99 2017 100.93 2018 103.43 2019 102.9 2020 101.09 2021 103.07 2022 107.1