Year | Value | 2015 | 73.512659162998 | 2014 | 68.591042333532 | 2013 | 68.353616559854 | 2012 | 66.747235367261 | 2011 | 68.525739406036 | 2010 | 69.253025184106 | 2009 | 86.063491912486 | 2007 | 84.994416948334 | 2006 | 88.699484122123 | 2005 | 90.604913114985 | 2004 | 102.32853669887 | 2003 | 102.27071202348 | 2002 | 105.5249907547 | 2001 | 103.21927414988 | 2000 | 96.904032645376 | 1999 | 95.108154612767 | 1998 | 89.195823911134 | 1997 | 86.105931670321 | 1996 | 92.343984335944 | 1995 | 94.649820597449 | 1994 | 94.855323234626 | 1993 | 96.797814098266 | 1992 | 95.361911950395 | 1991 | 98.483395775423 | 1990 | 96.580625512766 |
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