Year constant 2015 US$ 2009 438251393.2994037 2010 459857852.3329007 2011 537633234.8426111 2012 596727179.0287772 2013 335121459.0751694 2014 293161184.40638393 2015 334839450.3520125 2016 348880861.428266 2017 352468274.7205176 2018 349248128.6026099 2019 391381658.609638 2020 391348375.3498802 2021 506638943.1551333 2022 499039184.51490885 2023 447723875.790397