Year constant 2015 US$ 2008 323948997.15165305 2009 343884870.51228887 2010 417291755.22684145 2011 360701799.41727453 2012 277709984.88946474 2013 341562921.87491083 2014 409873944.94801456 2015 483342875.1486748 2016 560516156.691603 2017 538205152.848354 2018 481968848.1778204 2019 541776956.1665647 2020 510562628.3613754 2021 497842815.8024587 2022 520330045.20266443 2023 535907680.4086169