Year current US$ 2005 6844003752.26483 2006 7324801138.90089 2007 9508983305.332228 2008 15267150701.432074 2009 9898082600.024609 2010 10588879868.619009 2011 14493638014.129723 2012 15287366778.316246 2013 12888661360.87603 2014 12244521007.921036 2015 5160848491.87135 2016 3026428361.465998 2017 3578487634.906509 2018 3678280724.5842586 2019 2076728330.7576263 2020 1063731614.0096214 2021 2630720260.876461 2022 4265082201.262632 2023 2336596369.172713