Year % 2014 32.98809765160121 2015 33.51658030612477 2016 25.34914096429007 2017 23.02036437905876 2018 19.432227553758015 2019 20.26375750078692 2020 20.144209681454633 2021 22.641199531269457 2022 20.68218336442023 2023 21.875506135068672