Year 2014-2016 = 100 1961 27.97 1962 28.13 1963 29.18 1964 28.2 1965 30.38 1966 29.78 1967 32.24 1968 33.53 1969 35.21 1970 34.93 1971 34.39 1972 36.42 1973 37.49 1974 40.84 1975 40.87 1976 41.37 1977 41.28 1978 39.57 1979 42.28 1980 42.08 1981 42.28 1982 43.47 1983 41.31 1984 39.75 1985 37.99 1986 42.93 1987 39.32 1988 41.86 1989 41.64 1990 40.93 1991 40.73 1992 40.5 1993 40.77 1994 43.57 1995 45.43 1996 50.34 1997 52.96 1998 53.74 1999 51.76 2000 53.37 2001 55.13 2002 53.89 2003 50.94 2004 52.85 2005 53.41 2006 54.47 2007 57.1 2008 58.09 2009 60.21 2010 99.52 2011 100.53 2012 103.34 2013 80.9 2014 93.04 2015 96.07 2016 110.89 2017 111.84 2018 130.54 2019 153.47 2020 165.58 2021 169.35 2022 173.39