Year Number 1996 89.8936157226563 1998 79.2553176879883 2000 87.3015899658203 2002 89.9470901489258 2003 84.4221115112305 2004 76.2135925292969 2005 72.8155364990234 2006 82.6086959838867 2007 82.125602722168 2008 85.0961532592773 2009 89.0995254516602 2010 81.0426559448242 2011 86.2559204101563 2012 89.0995254516602 2013 86.7298583984375 2014 92.8571395874023 2015 94.2857131958008 2016 92.8571395874023 2017 87.1428604125977 2018 82.5471725463867 2019 81.6037750244141 2020 84.4339599609375 2021 83.0188674926758 2022 73.5849075317383