Year % 2012 1.97918850160558 2013 1.36272997345919 2014 1.39308157727037 2015 1.19666338224756 2016 1.01951629784187 2017 0.711723765065431 2018 0.184202625037353 2019 0.0601209513708148 2020 0.0758297151768067 2021 0.0373822661078679 2022 0.0602272574062917 2023 0.127739577671649