Year current US$ 2012 955456.19726181 2013 983369.112014771 2014 1080880.0458908102 2015 881070.017814636 2016 1598430.03749847 2017 1071040.03429413 2018 1841175.31776428 2019 3925280.09414673 2020 3079882.14492798 2021 2587899.9233245896 2022 2569546.22268677