Year Number 1996 94.9748764038086 1998 93.5 2000 92.5373153686523 2002 93.0348281860352 2003 93.0348281860352 2004 91.8269195556641 2005 86.6028671264648 2006 90.4306182861328 2007 89.9521560668945 2008 89.9038467407227 2009 90.9952621459961 2010 90.9952621459961 2011 90.1408462524414 2012 90.1408462524414 2013 88.2629089355469 2014 73.0769195556641 2015 83.3333358764648 2016 80.9523773193359 2017 78.0952377319336 2018 77.1428604125977 2019 78.5714263916016 2020 80.9523773193359 2021 77.1428604125977 2022 78.7735824584961