| Year | Value | | 2022 | 82.075469970703 | | 2021 | 82.857139587402 | | 2020 | 83.809524536133 | | 2019 | 80 | | 2018 | 80 | | 2017 | 78.095237731934 | | 2016 | 76.666664123535 | | 2015 | 75.714286804199 | | 2014 | 75.480766296387 | | 2013 | 85.308059692383 | | 2012 | 85.78199005127 | | 2011 | 85.308059692383 | | 2010 | 85.645935058594 | | 2009 | 89.952156066895 | | 2008 | 86.407768249512 | | 2007 | 87.378639221191 | | 2006 | 87.804878234863 | | 2005 | 88.235290527344 | | 2004 | 88.059700012207 |
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