Year % (cumulative) 2004 97.9570236206055 2005 97.3251266479492 2006 97.2818832397461 2007 97.4354629516602 2008 97.1188201904297 2009 97.0770034790039 2010 96.9428176879883 2011 97.0821380615234 2012 97.0964508056641 2013 96.9991989135742 2014 97.0903396606445 2015 97.0093765258789 2016 96.8296127319336 2017 96.1638412475586 2018 96.5514068603516 2019 96.0584335327148 2020 95.9397735595703 2021 93.9384689331055 2022 94.3460388183594