Year % (cumulative) 2004 97.563346862793 2005 96.5074691772461 2006 96.6081237792969 2007 96.7584915161133 2008 96.3851623535156 2009 96.3602828979492 2010 96.1299819946289 2011 96.3666381835938 2012 96.3856582641602 2013 96.361686706543 2014 96.5257034301758 2015 96.4398422241211 2016 96.2129592895508 2017 94.982177734375 2018 96.1211700439453 2019 94.9056701660156 2020 95.4335021972656 2021 93.1566390991211 2022 93.5915908813477