Year constant 2015 US$ 2006 4030444428.524593 2007 4869490482.905657 2008 5543722809.82629 2009 4690541962.208028 2010 4577675538.773853 2011 4535692378.466513 2012 4422989515.570136 2013 4552591156.514884 2014 4631503337.824273 2015 4802942651.470771 2016 5294588942.826115 2017 5624645657.714217 2018 6032063943.529038 2019 6124806654.504122 2020 5780003047.089754 2021 5761927987.922238 2022 6129416069.504261 2023 6429165477.270374