Year Percent change 2009 -7.67 2010 3.217 2011 4.92 2012 2.914 2013 0.331 2014 -0.796 2015 -2.473 2016 -0.898 2017 3.43 2018 42.074 2019 40.116 2020 4.798 2021 3 2022 3 2023 3 2024 3