Year % (cumulative) 1999 83.5263214111328 2007 88.435417175293 2008 88.5401382446289 2009 88.6104888916016 2010 88.6454010009766 2011 88.6587829589844 2012 88.7130889892578 2013 88.7197418212891 2014 88.7141723632812 2015 88.6650772094727 2016 88.6644515991211 2017 88.5012283325195 2018 88.4309387207031 2019 88.4195785522461 2021 92.0473937988281 2022 92.9022064208984 2023 91.8056716918945