Year constant 2015 US$ 2014 3186804312.308967 2015 3325330000 2016 3569037741.4637203 2017 3203833873.06037 2018 3391300286.125295 2019 3280106662.437896 2020 2956478768.533835 2021 3081387780.216104 2022 3383998288.58192