Year % (cumulative) 2009 0 2010 0 2011 32.3346519470215 2012 30.1727104187012 2013 33.1168594360352 2014 30.864330291748 2015 34.6597900390625 2016 32.8466300964355 2017 34.0182189941406 2018 34.8497581481934 2019 33.6676902770996 2020 33.1648941040039 2022 34.0162506103516