Year | Value | 2014 | 98.38148616513 | 2013 | 98.839616303957 | 2012 | 99.020755696883 | 2011 | 99.200490744903 | 2010 | 99.417710380149 | 2009 | 99.880399985612 | 2008 | 99.891582006199 | 2007 | 99.910160832631 | 2006 | 99.92258631326 | 2005 | 99.940396448764 | 2004 | 99.951040332636 | 2003 | 99.962454369948 | 2002 | 99.967407609437 | 2001 | 100 | 2000 | 100 | 1999 | 100 | 1998 | 100 | 1997 | 100 | 1996 | 100 | 1995 | 100 | 1994 | 100 | 1993 | 100 | 1992 | 100 | 1991 | 100 | 1990 | 100 | 1989 | 100 | 1988 | 100 | 1987 | 100 | 1986 | 100 | 1985 | 100 | 1984 | 100 | 1983 | 100 | 1982 | 100 | 1981 | 100 | 1980 | 100 | 1979 | 100 | 1978 | 100 | 1977 | 100 | 1976 | 100 | 1975 | 100 | 1974 | 100 | 1973 | 100 | 1972 | 100 | 1971 | 100 |
|