Year | Value | 2022 | 91.827 | 2021 | 91.626 | 2020 | 91.418 | 2019 | 91.203 | 2018 | 90.979 | 2017 | 90.747 | 2016 | 90.506 | 2015 | 90.256 | 2014 | 90 | 2013 | 89.125 | 2012 | 88.185 | 2011 | 87.172 | 2010 | 86.088 | 2009 | 84.928 | 2008 | 83.692 | 2007 | 82.371 | 2006 | 80.97 | 2005 | 79.485 | 2004 | 78.321 | 2003 | 78.308 | 2002 | 78.296 | 2001 | 78.283 | 2000 | 78.27 | 1999 | 78.258 | 1998 | 78.245 | 1997 | 78.232 | 1996 | 78.22 | 1995 | 78.207 | 1994 | 77.74 | 1993 | 76.68 | 1992 | 75.586 | 1991 | 74.455 | 1990 | 73.291 | 1989 | 72.095 | 1988 | 70.868 | 1987 | 69.606 | 1986 | 68.315 | 1985 | 66.996 | 1984 | 65.652 | 1983 | 64.278 | 1982 | 62.882 | 1981 | 61.464 | 1980 | 60.029 | 1979 | 58.98 | 1978 | 58.649 | 1977 | 58.316 | 1976 | 57.984 | 1975 | 57.65 | 1974 | 57.315 | 1973 | 56.98 | 1972 | 56.645 | 1971 | 56.308 | 1970 | 55.971 | 1969 | 55.633 | 1968 | 55.296 | 1967 | 54.957 | 1966 | 54.61 | 1965 | 54.262 | 1964 | 53.914 | 1963 | 53.565 | 1962 | 53.215 | 1961 | 52.412 | 1960 | 50.879 |
|