Year % 2007 91.1872669916834 2008 93.9922191491559 2009 88.0974770412757 2010 89.2715627443573 2011 97.0477415449799 2012 93.1774141293119 2013 90.7556144321939 2014 84.5912868385688 2015 81.5868681788061 2016 80.7973568281938 2017 79.1236182674946 2018 80.4120260027082 2019 84.3118304335379 2020 80.3073453238785 2021 81.0140845070423 2022 84.5395167315188