Year current US$ 2012 266926.914453506 2013 474875.18191337603 2014 290809.988975525 2015 638639.986515045 2016 400249.987840652 2017 702910.006046295 2018 529671.728610992 2019 1154019.95182037 2020 1405045.03250122 2021 997600.018978119 2022 699842.154979706