Year % (cumulative) 2006 30.7576904296875 2007 30.0571784973145 2008 31.3158206939697 2009 32.7039451599121 2010 34.1610641479492 2011 31.8034992218018 2012 36.0785026550293 2013 37.4390182495117 2014 38.1916961669922 2015 39.0937576293945 2016 39.4379806518555 2017 36.656421661377 2018 41.1346549987793 2019 41.4367713928223 2020 43.654727935791 2021 45.9648818969727 2022 46.6029243469238