Year % (cumulative) 2006 0 2007 0 2008 0 2009 0 2010 0 2011 16.503719329834 2012 0.374591767787933 2013 0.35968428850174 2014 15.3560495376587 2015 16.5289001464844 2016 17.6331100463867 2017 18.566520690918 2018 19.3569297790527 2019 20.3189792633057 2020 21.0632266998291 2021 21.6294937133789 2022 22.8422660827637