Year annual % change 2011 -71.9066555204386 2012 -41.2476515414393 2013 -56.8169279021725 2014 -43.3293447463191 2015 -40.9004532829316 2016 -2.14952509094357 2017 40.3231390968098 2018 -19.6790761246027 2019 -10.1201260829819 2020 -10.3902333706061 2021 35.7417906518312 2022 -19.9760229609712