Year Percent change 2012 -52.429 2013 29.329 2014 2.918 2015 -0.173 2016 -16.737 2017 -5.495 2018 -1.192 2019 8.782 2020 5.162 2021 6.938 2022 5.887 2023 6.825 2024 4.971