Year | Value | 2022 | 87.912 | 2021 | 87.817 | 2020 | 87.727 | 2019 | 87.643 | 2018 | 87.564 | 2017 | 87.49 | 2016 | 87.422 | 2015 | 87.36 | 2014 | 87.303 | 2013 | 87.246 | 2012 | 87.189 | 2011 | 87.132 | 2010 | 87.074 | 2009 | 87.017 | 2008 | 86.959 | 2007 | 86.9 | 2006 | 86.842 | 2005 | 86.783 | 2004 | 86.725 | 2003 | 86.665 | 2002 | 86.606 | 2001 | 86.363 | 2000 | 86.073 | 1999 | 85.778 | 1998 | 85.477 | 1997 | 85.172 | 1996 | 84.861 | 1995 | 84.545 | 1994 | 84.223 | 1993 | 83.896 | 1992 | 83.564 | 1991 | 83.398 | 1990 | 83.271 | 1989 | 83.143 | 1988 | 83.014 | 1987 | 82.885 | 1986 | 82.755 | 1985 | 82.624 | 1984 | 82.492 | 1983 | 82.359 | 1982 | 82.226 | 1981 | 81.778 | 1980 | 81.243 | 1979 | 80.695 | 1978 | 80.136 | 1977 | 79.565 | 1976 | 78.982 | 1975 | 78.386 | 1974 | 77.778 | 1973 | 77.159 | 1972 | 76.528 | 1971 | 75.883 | 1970 | 75.227 | 1969 | 74.547 | 1968 | 73.854 | 1967 | 73.146 | 1966 | 72.427 | 1965 | 71.696 | 1964 | 70.955 | 1963 | 70.2 | 1962 | 69.435 | 1961 | 68.66 | 1960 | 67.836 |
|