Year current US$ 2012 82305.0513863564 2013 147573.51577281998 2014 99490.0017976761 2015 113959.99789238 2016 116779.997944832 2017 175229.996442795 2018 115106.388926506 2019 260509.99760627703 2020 50503.421574831 2021 55900.0000357628 2022 22500.3287196159