Year % (cumulative) 2006 0 2007 0 2008 0 2009 0 2010 0 2011 0 2012 0 2013 0 2014 12.7379102706909 2015 13.833722114563 2016 14.0918607711792 2017 14.3732357025146 2018 14.5713672637939 2019 14.8875246047974 2020 15.2507238388062 2021 14.1383724212646 2022 15.6972007751465