Year annual % 2014 7.413891668097605 2015 8.616275255219492 2016 9.463028004832694 2017 8.789123462251382 2018 -1.1781187991478816 2019 4.665973834357999 2020 8.59313292920693 2021 8.064895563007596 2022 -2.2599749951823327