Year constant 2015 US$ 2014 3210580963.345909 2015 3237728000 2016 3459815980.3702354 2017 3264228607.6587253 2018 3139254707.3201966 2019 3087511057.0090528 2020 2794300404.395192 2021 2891139737.6789436 2022 2999038180.5234013