Year	current US$
1990	3111544343.61415
1991	5175992303.06313
1992	5081184580.02929
1993	5095202394.4231
1994	7271889813.39212
1995	6891680242.79533
1996	3052334176.51873
1997	2200795597.25901
1998	1384494437.69899
1999	-530157537.207465
2000	-989245264.387487
2001	314037168.773408
2002	1578138931.67874
2003	2352355228.79749
2004	4014489797.44968
2005	7253125014.33036
2006	7974886014.3424
2007	11126884341.0119
2008	11780580408.1364
2009	14549735638.9403
2010	14581025235.6768
2011	10492068520.613
2012	10169162301.0962
2013	13880831393.1956
2014	15871895392.0122
2015	15444497394.4826
2016	17125482621.7353
2017	16911607347.5474
2018	14715605692.6863
2019	14360717076.7927
2020	13390544331.9408
2021	5452295547.35181