Year % (cumulative) 2006 0 2007 0 2008 0 2009 0 2010 0 2011 0 2012 0 2013 0 2014 0.302720576524734 2015 0.30296716094017 2016 0.299648314714432 2017 0.368748962879181 2018 0.385029435157776 2019 0.388224959373474 2020 0.401259988546371 2021 0.417438507080078 2022 0.414483517408371