Year | Value | 2022 | 79.154 | 2021 | 79.486 | 2020 | 79.801 | 2019 | 80.101 | 2018 | 80.385 | 2017 | 80.654 | 2016 | 80.908 | 2015 | 81.148 | 2014 | 81.374 | 2013 | 81.585 | 2012 | 81.783 | 2011 | 81.968 | 2010 | 82.14 | 2009 | 82.299 | 2008 | 82.445 | 2007 | 82.58 | 2006 | 82.713 | 2005 | 82.846 | 2004 | 82.977 | 2003 | 83.109 | 2002 | 83.239 | 2001 | 83.368 | 2000 | 83.496 | 1999 | 83.624 | 1998 | 83.751 | 1997 | 83.877 | 1996 | 84.003 | 1995 | 84.127 | 1994 | 84.251 | 1993 | 84.374 | 1992 | 85.088 | 1991 | 85.926 | 1990 | 86.724 | 1989 | 87.483 | 1988 | 88.203 | 1987 | 88.889 | 1986 | 89.539 | 1985 | 90.156 | 1984 | 90.739 | 1983 | 91.292 | 1982 | 91.503 | 1981 | 91.492 | 1980 | 91.481 | 1979 | 91.469 | 1978 | 91.458 | 1977 | 91.447 | 1976 | 91.435 | 1975 | 91.424 | 1974 | 91.413 | 1973 | 91.401 | 1972 | 91.39 | 1971 | 91.378 | 1970 | 91.367 | 1969 | 91.355 | 1968 | 91.344 | 1967 | 91.333 | 1966 | 91.321 | 1965 | 91.31 | 1964 | 91.298 | 1963 | 91.286 | 1962 | 91.275 | 1961 | 91.263 | 1960 | 91.252 |
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