Year % (cumulative) 2006 0.418818414211273 2007 0.41455739736557 2008 0.396736472845078 2009 0.418205350637436 2010 0.534815609455109 2011 0.570325374603271 2012 0.601769864559174 2013 0.678235471248627 2014 28.9782695770264 2015 30.3837299346924 2016 30.979829788208 2017 29.7281112670898 2018 32.3588409423828 2019 31.120885848999 2020 33.0904998779297 2021 32.452018737793 2022 32.7245712280273