Year 2014-2016 = 100 1961 15.36 1962 16.62 1963 18.42 1964 19.06 1965 17.68 1966 18.2 1967 20.69 1968 21.64 1969 21.28 1970 23.07 1971 23.47 1972 24.62 1973 25.12 1974 27.74 1975 27.31 1976 25.6 1977 26.01 1978 25.66 1979 26.11 1980 26.74 1981 27.32 1982 28.42 1983 27.67 1984 28.06 1985 29.64 1986 32.43 1987 27.57 1988 29.31 1989 30.14 1990 30.93 1991 31.64 1992 31.37 1993 33.36 1994 35.24 1995 38.03 1996 40.23 1997 38.31 1998 41.11 1999 42.8 2000 43.55 2001 43.77 2002 44.69 2003 46.93 2004 48.05 2005 58.35 2006 62.32 2007 66.17 2008 68.46 2009 73.87 2010 81.99 2011 83.09 2012 89.66 2013 92.3 2014 96.08 2015 101.61 2016 102.31 2017 102.55 2018 106.74 2019 106.22 2020 108.86 2021 106.66 2022 108.5