Year Number 2004 68.6567153930664 2005 99.0196075439453 2006 98.0392150878906 2007 94.6601943969727 2008 96.6019439697266 2009 99.5215301513672 2010 100 2011 98.5782012939453 2012 99.052131652832 2013 99.052131652832 2014 89.4230804443359 2015 88.5714263916016 2016 87.6190490722656 2017 81.9047622680664 2018 81.9047622680664 2019 82.3809509277344 2020 83.3333358764648 2021 83.3333358764648 2022 84.4339599609375