Year	current US$
2008	5697891263.8072
2009	5684907784.22374
2010	6519588702.32982
2011	6943793911.00703
2012	10475932203.3898
2013	11362372881.3559
2014	10585706203.3898
2015	1060817934.63182
2016	1975788158.15379