Year current US$ 2012 73722.0942974091 2013 77271.0740566254 2014 72920.0020432472 2015 73210.0009918213 2016 80859.9963784218 2017 101980.000734329 2018 237700.223922729 2019 262930.005788803 2020 278168.588876724 2021 427100.00276565604 2022 366659.52205658