Year current US$ 2012 12736362.998839462 2013 13762285.789940504 2014 11564200.064167378 2015 16016019.98507976 2016 13605249.933898456 2017 16978599.891532216 2018 23809257.30615855 2019 34193269.87443491 2020 24856130.927801136 2021 23925530.180335037 2022 24052832.0465237