Year constant 2015 US$ 2011 7370469375.050626 2012 6606784186.451747 2013 6624963733.099612 2014 6811911309.69754 2015 6047701382.620934 2016 5555352887.408059 2017 5981207299.105769 2018 6304737136.243395 2019 5940332983.356588 2020 5619616843.730238 2021 6684634348.006995 2022 7419890229.8731165 2023 7363951484.6369915