Year | Value | 2022 | 94.875 | 2021 | 94.81 | 2020 | 94.744 | 2019 | 94.678 | 2018 | 94.612 | 2017 | 94.546 | 2016 | 94.48 | 2015 | 94.414 | 2014 | 94.347 | 2013 | 94.279 | 2012 | 94.211 | 2011 | 94.141 | 2010 | 94.072 | 2009 | 94.001 | 2008 | 93.929 | 2007 | 93.857 | 2006 | 93.784 | 2005 | 93.645 | 2004 | 93.407 | 2003 | 93.16 | 2002 | 92.905 | 2001 | 92.641 | 2000 | 92.368 | 1999 | 92.085 | 1998 | 91.793 | 1997 | 91.492 | 1996 | 91.181 | 1995 | 90.946 | 1994 | 90.835 | 1993 | 90.723 | 1992 | 90.611 | 1991 | 90.497 | 1990 | 90.381 | 1989 | 90.265 | 1988 | 90.147 | 1987 | 90.028 | 1986 | 89.907 | 1985 | 89.828 | 1984 | 89.82 | 1983 | 89.811 | 1982 | 89.803 | 1981 | 89.794 | 1980 | 89.785 | 1979 | 89.777 | 1978 | 89.768 | 1977 | 89.76 | 1976 | 89.751 | 1975 | 89.742 | 1974 | 89.734 | 1973 | 89.725 | 1972 | 89.716 | 1971 | 89.708 | 1970 | 89.699 | 1969 | 89.69 | 1968 | 89.682 | 1967 | 89.702 | 1966 | 89.764 | 1965 | 89.825 | 1964 | 89.886 | 1963 | 89.948 | 1962 | 90.008 | 1961 | 90.069 | 1960 | 90.129 |
|