Year Number 1996 92.9648208618164 1998 94.5 2000 98.5074615478516 2002 100 2003 100 2004 97.1153869628906 2005 95.6937789916992 2006 92.8229675292969 2007 92.8229675292969 2008 92.788459777832 2009 88.1516571044922 2010 88.6255950927734 2011 88.7323913574219 2012 87.3239440917969 2013 87.7934265136719 2014 87.0192337036133 2015 87.6190490722656 2016 84.2857131958008 2017 79.0476226806641 2018 73.3333358764648 2019 73.3333358764648 2020 68.0952377319336 2021 70.9523773193359 2022 70.7547149658203