| Year | Value | | 2019 | 115.53320212843 | | 2018 | 112.58109191632 | | 2017 | 109.74560828049 | | 2016 | 108.03265544136 | | 2015 | 108.08367956848 | | 2014 | 108.60121000073 | | 2013 | 106.99759457686 | | 2012 | 105.59078650047 | | 2011 | 102.33253152562 | | 2010 | 100 | | 2009 | 97.295721262482 | | 2008 | 95.619214228443 | | 2007 | 89.467162329616 | | 2006 | 86.864931846345 | | 2005 | 84.24083388002 | | 2004 | 80.909687294992 | | 2003 | 79.80902398134 | | 2002 | 78.526131642248 | | 2001 | 78.21998687951 | | 2000 | 76.84233544719 |
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