Year current US$ 2010 445519089.84547 2011 510253018.8627589 2012 416405325.3087234 2013 481660652.58325994 2014 508825368.169492 2015 875467924.651727 2016 923088276.067582 2017 948895082.792291 2018 936163668.523741 2019 909770633.33078 2020 466431999.1223201 2021 611829863.822316 2022 836820331.1407831 2023 912748207.0435004