Year current US$ 2003 1616833435619.7727 2004 1972929711609.8723 2005 2391061155984.421 2006 3841205926402.75 2007 8446780190609.861 2008 3859155241330.4414 2009 7341767579018.356 2010 8850550828732.955 2011 7594215070645.664 2012 8482012135679.075 2013 8580838003871.513 2014 10246906718844.92 2015 11435514269727.027 2016 11186780579393.77 2017 13578693864542.748 2018 10513194428617.768 2019 13643012850000 2020 18259379260000 2021 20403708750000 2022 17728485740000