Year | Value | 2022 | 82.042 | 2021 | 81.425 | 2020 | 80.771 | 2019 | 80.076 | 2018 | 79.34 | 2017 | 78.56 | 2016 | 77.735 | 2015 | 76.862 | 2014 | 75.941 | 2013 | 74.97 | 2012 | 73.946 | 2011 | 72.868 | 2010 | 71.736 | 2009 | 70.575 | 2008 | 69.39 | 2007 | 68.174 | 2006 | 66.935 | 2005 | 65.672 | 2004 | 64.388 | 2003 | 63.08 | 2002 | 61.753 | 2001 | 60.41 | 2000 | 59.052 | 1999 | 58.157 | 1998 | 57.264 | 1997 | 56.367 | 1996 | 55.467 | 1995 | 54.561 | 1994 | 53.653 | 1993 | 52.743 | 1992 | 51.832 | 1991 | 50.917 | 1990 | 50.003 | 1989 | 49.089 | 1988 | 48.177 | 1987 | 47.264 | 1986 | 46.353 | 1985 | 45.445 | 1984 | 44.542 | 1983 | 44.156 | 1982 | 43.803 | 1981 | 43.45 | 1980 | 43.099 | 1979 | 42.747 | 1978 | 42.396 | 1977 | 42.046 | 1976 | 41.698 | 1975 | 41.349 | 1974 | 41.002 | 1973 | 40.655 | 1972 | 40.068 | 1971 | 39.445 | 1970 | 38.827 | 1969 | 38.212 | 1968 | 37.601 | 1967 | 36.993 | 1966 | 36.39 | 1965 | 35.791 | 1964 | 35.197 | 1963 | 34.606 | 1962 | 34.404 | 1961 | 34.329 | 1960 | 34.254 |
|