Year Number 1996 88.5869598388672 1998 90.2173919677734 2000 88.0434799194336 2002 84.8648681640625 2003 76.7567596435547 2004 79.1044769287109 2005 76.9607849121094 2006 79.9019622802734 2007 83.980583190918 2008 81.5533981323242 2009 79.9043045043945 2010 81.339714050293 2011 80.0947875976563 2012 80.568717956543 2013 79.1469192504883 2014 82.211540222168 2015 84.2857131958008 2016 80.9523773193359 2017 75.7142868041992 2018 75.2380981445313 2019 74.2857131958008 2020 81.4285736083984 2021 84.7619018554688 2022 88.2075500488281