Year | Value | 2016 | 79.665474338446 | 2015 | 86.336800779518 | 2014 | 87.749293591532 | 2013 | 91.185617782084 | 2012 | 89.927414454403 | 2011 | 77.367618436247 | 2010 | 86.489798075564 | 2009 | 82.826216316823 | 2008 | 83.859035352219 | 2007 | 79.671759704023 | 2006 | 75.581679331565 | 2005 | 79.807088028135 | 2004 | 84.50126298284 | 2003 | 85.799707934061 | 2002 | 80.709450341841 | 2001 | 96.609511960412 | 2000 | 94.097636208935 | 1988 | 104.77001169367 | 1987 | 97.741598157875 | 1986 | 97.156405228993 | 1985 | 98.685449361282 | 1984 | 97.398373907595 |
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