Year Number 1996 75.5319137573242 1998 89.361701965332 2000 70.8994674682617 2002 81.4814834594727 2003 79.8994979858398 2004 65.0485458374023 2005 76.6990280151367 2006 71.4975814819336 2007 84.0579681396484 2008 87.0192337036133 2009 80.0947875976563 2010 86.7298583984375 2011 81.0426559448242 2012 88.1516571044922 2013 89.0995254516602 2014 85.7142868041992 2015 75.2380981445313 2016 70.476188659668 2017 78.0952377319336 2018 70.2830200195313 2019 68.8679275512695 2020 67.4528274536133 2021 65.5660400390625 2022 59.9056587219238