Year current US$ 2011 23144446011.166252 2012 31384316099.681255 2013 35005782229.752106 2014 39047861935.916794 2015 46016302447.66989 2016 49382721313.849075 2017 54402772164.884705 2018 55334699415.092865 2019 65874996591.41886 2020 75406995884.77367 2021 80353907714.35294 2022 98126671750.46548 2023 129173373237.0321