Year % 2013 0.207822183024258 2014 0.6619118694664 2015 0.174761100235101 2016 1.07514455176836 2017 0.348051804980824 2018 0.312830381232845 2019 0.326526585774884 2020 0.12803046468493 2021 0.266189458370341