Year	current US$
2002	3715870712.00578
2003	10486635178.8887
2004	11354443375.7272
2005	25498811553.2474
2006	36831779704.4269
2007	40445141508.1003
2008	52020006060.1713
2009	20871103120.7493
2010	32764790091.9991
2011	5386789176.59103
2012	32558318324.2961
2013	12892103402.8528
2014	1141022213.28529
2015	-2781411852.47149
2016	-4578365528.79721
2017	7429265945.78424
2018	15614006211.5582
2019	8710907638.67458
2020	-12056497753.8523