Year | Value | 2018 | 99.655470738986 | 2017 | 99.209671621151 | 2016 | 100.23357697333 | 2015 | 108.30194657522 | 2014 | 113.47215081833 | 2013 | 115.62764217208 | 2012 | 115.90646220762 | 2011 | 101.62992225928 | 2010 | 102.72261154344 | 2009 | 96.712103841064 | 2008 | 110.05920999788 | 2007 | 104.58943309159 | 2006 | 113.11299374957 | 2005 | 102.05472392249 | 2004 | 94.215517213969 | 2003 | 94.740757874556 | 2002 | 86.151196548082 | 2001 | 82.298212726793 | 2000 | 85.725476875716 | 1999 | 96.767397012966 | 1998 | 106.09863844079 | 1997 | 86.223224498708 | 1996 | 100.62224083626 | 1995 | 94.549429857975 | 1994 | 97.293497071353 | 1993 | 95.97736567875 | 1992 | 92.094968298934 | 1991 | 85.945945945946 | 1990 | 96.261682242991 | 1989 | 86.933333333333 | 1988 | 85.630498533724 | 1987 | 87.622149837134 |
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