Year 2014-2016 = 100 1961 14.18 1962 15.78 1963 16.41 1964 17.14 1965 16.74 1966 14.78 1967 16.41 1968 17.22 1969 17.15 1970 17.75 1971 18.2 1972 17.16 1973 18.67 1974 18.92 1975 19.77 1976 20.1 1977 20.62 1978 22.47 1979 22.74 1980 26.47 1981 28.61 1982 30.06 1983 30.81 1984 31.49 1985 32.3 1986 32.38 1987 31.57 1988 30.74 1989 29.4 1990 29.06 1991 28.74 1992 32.38 1993 35.12 1994 37.62 1995 38.65 1996 39.87 1997 38.96 1998 40.32 1999 46.42 2000 50.76 2001 53.74 2002 55.7 2003 60.45 2004 65.27 2005 72.85 2006 81.61 2007 86.19 2008 92.04 2009 95.56 2010 98.31 2011 94.62 2012 93.93 2013 98.23 2014 97.99 2015 100.99 2016 101.02 2017 100.41 2018 79.86 2019 79.07 2020 78.76 2021 80.46 2022 76.96