| Year | Value | | 2011 | 352.78980355905 | | 2010 | -23.071621623032 | | 2009 | 9.5901329493331 | | 2008 | -8.118144842081 | | 2007 | 0.58378645392543 | | 2006 | -3.5521516143835 | | 2005 | -3.5233856954439 | | 2004 | 5.0611024656417 | | 2003 | 0.53783977407271 | | 2002 | 1.1314837562175 | | 2001 | 9.6505556895375 | | 2000 | -1.5998473552909 | | 1999 | 0.36590907748297 | | 1998 | 4.1754552370182 | | 1997 | 8.0687644047178 | | 1996 | 9.2375699217393 | | 1995 | -1.6649054453883 | | 1994 | 14.463498566263 |
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