Year current US$ 2011 10444681380.8072 2012 10412912087.9121 2013 11281043956.044 2014 11230219780.2198 2015 12192032967.0329 2016 11981868131.8681 2017 12759340659.3407 2018 11557967032.967 2019 11963736263.7363 2020 10112087912.0879 2021 10966208791.2088 2022 12285714285.7143