Year constant 2015 US$ 2013 877828118.9139162 2014 968796914.1403955 2015 1037964069.9996551 2016 1040223151.6025912 2017 943614953.9355967 2018 1037227548.5732054 2019 997535808.4477971 2020 1015509426.6185305 2021 1188505501.504165 2022 1351016965.7953215 2023 1431351138.1116261