Year | Value | 2022 | 84.398 | 2021 | 84.152 | 2020 | 83.903 | 2019 | 83.652 | 2018 | 83.398 | 2017 | 83.143 | 2016 | 82.886 | 2015 | 82.626 | 2014 | 82.365 | 2013 | 82.102 | 2012 | 81.837 | 2011 | 81.57 | 2010 | 81.302 | 2009 | 81.031 | 2008 | 80.757 | 2007 | 80.479 | 2006 | 80.199 | 2005 | 79.915 | 2004 | 79.629 | 2003 | 79.339 | 2002 | 79.047 | 2001 | 78.751 | 2000 | 78.651 | 1999 | 78.591 | 1998 | 78.532 | 1997 | 78.472 | 1996 | 78.413 | 1995 | 78.353 | 1994 | 78.293 | 1993 | 78.232 | 1992 | 78.172 | 1991 | 78.112 | 1990 | 78.14 | 1989 | 78.19 | 1988 | 78.24 | 1987 | 78.29 | 1986 | 78.34 | 1985 | 78.39 | 1984 | 78.44 | 1983 | 78.489 | 1982 | 78.539 | 1981 | 78.588 | 1980 | 78.481 | 1979 | 78.323 | 1978 | 78.164 | 1977 | 78.005 | 1976 | 77.844 | 1975 | 77.683 | 1974 | 77.521 | 1973 | 77.358 | 1972 | 77.195 | 1971 | 77.03 | 1970 | 77.117 | 1969 | 77.259 | 1968 | 77.4 | 1967 | 77.541 | 1966 | 77.682 | 1965 | 77.821 | 1964 | 77.96 | 1963 | 78.099 | 1962 | 78.237 | 1961 | 78.374 | 1960 | 78.444 |
|