Year constant 2015 US$ 2011 10490652506.785095 2012 12820249887.152357 2013 13360392654.921083 2014 16057182845.741514 2015 19565922931.79373 2016 19575310388.835606 2017 18113327256.321823 2018 16919162127.924831 2019 16029112841.507193 2020 15710301022.480492 2021 17792711840.32152 2022 19639121444.122833 2023 18826655014.173435