Year annual % growth 2012 6.060256689690121 2013 0.17869667278824863 2014 9.165329546676887 2015 7.336780261200431 2016 24.67570211313739 2017 16.879847541327138 2018 -26.61929112579932 2019 4.706295911424775 2020 2.974031922853925 2021 1.662470999373383