Year % (cumulative) 2006 22.2708892822266 2007 22.5379600524902 2008 24.2825603485107 2009 24.9710998535156 2010 25.9120292663574 2011 26.5061206817627 2012 28.0994396209717 2013 29.7189407348633 2014 30.2061100006104 2015 30.4740905761719 2016 31.1305904388428 2017 33.2502212524414 2018 34.0377616882324 2019 34.0954704284668 2020 34.3565101623535 2021 36.0761413574219 2022 36.2074584960938