Year | Value | 2022 | 83.848 | 2021 | 83.213 | 2020 | 82.54 | 2019 | 81.828 | 2018 | 81.074 | 2017 | 80.277 | 2016 | 79.436 | 2015 | 78.566 | 2014 | 77.67 | 2013 | 76.749 | 2012 | 75.802 | 2011 | 74.827 | 2010 | 73.753 | 2009 | 72.542 | 2008 | 71.3 | 2007 | 70.02 | 2006 | 68.71 | 2005 | 67.37 | 2004 | 66.003 | 2003 | 64.605 | 2002 | 63.371 | 2001 | 62.565 | 2000 | 61.753 | 1999 | 60.933 | 1998 | 60.107 | 1997 | 59.276 | 1996 | 58.441 | 1995 | 57.598 | 1994 | 56.752 | 1993 | 56.037 | 1992 | 55.767 | 1991 | 55.497 | 1990 | 55.226 | 1989 | 54.955 | 1988 | 54.684 | 1987 | 54.412 | 1986 | 54.14 | 1985 | 53.868 | 1984 | 53.596 | 1983 | 53.323 | 1982 | 53.05 | 1981 | 52.401 | 1980 | 51.29 | 1979 | 50.175 | 1978 | 49.061 | 1977 | 47.948 | 1976 | 46.838 | 1975 | 45.729 | 1974 | 44.626 | 1973 | 43.527 | 1972 | 42.437 | 1971 | 41.351 | 1970 | 40.274 | 1969 | 39.207 | 1968 | 38.153 | 1967 | 37.106 | 1966 | 36.073 | 1965 | 35.052 | 1964 | 34.046 | 1963 | 33.052 | 1962 | 32.074 | 1961 | 31.112 | 1960 | 30.191 |
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