Year current US$ 2011 2894784972.067039 2012 2951663072.625698 2013 2951110502.793296 2014 2993652793.296089 2015 3014589273.7430167 2016 2967651061.4525137 2017 2998237709.4972067 2018 3028320111.7318435 2019 3038652569.832402 2020 2551929888.2681565 2021 2771395858.659218 2022 3067935215.535754