Year	current US$
2003	3985324050.42144
2004	5120157996.42972
2005	5714921657.79448
2006	5840207535.50819
2007	6367097203.57769
2008	7116844121.98558
2009	6746994214.67231
2010	6176784672.53106
2011	14912553363.8958
2012	13491256309.2265
2013	13487709786.4643
2014	12754288879.2415
2015	11049120735.1761
2016	11847655800.3129
2017	11038305330.931