Year % (cumulative) 2005 98.8446578979492 2006 98.3576278686523 2007 98.5225296020508 2008 98.8051300048828 2009 98.7717132568359 2010 98.9302825927734 2011 99.112548828125 2012 99.0571517944336 2013 99.1802215576172 2014 99.1242828369141 2015 99.1104736328125 2016 99.4631118774414 2017 99.3502426147461 2018 99.2101058959961 2019 99.5281066894531 2020 99.3882369995117 2021 99.4771270751953 2022 99.2947158813477