Year % (cumulative) 2012 2.86897039413452 2013 3.20258283615112 2014 3.41593813896179 2015 3.3361554145813 2016 2.94417262077332 2017 3.03941226005554 2018 3.12026214599609 2019 3.03460574150085 2020 3.54768896102905 2021 0