Year	current US$
1990	-4353022509.04234
1991	-2227260335.33836
1992	777062270.979248
1993	2249693853.86302
1994	1516206992.57099
1995	7206886902.56698
1996	3213042994.61658
1997	4434778439.73753
1998	2521732212.73096
1999	1757887832.56643
2000	795276855.946832
2001	-2291732250.82536
2002	1778934411.72451
2003	8570632984.41396
2004	7835504546.2354
2005	12337210196.6364
2006	12373447766.1749
2007	6568579616.88758
2008	-10073565462.4808
2009	7320551666.41632
2010	8633614598.75875
2011	5882080969.78907
2012	-3221199528.6632
2013	-6350754150.18176
2014	-5077334705.17617
2015	134449941.109912
2016	-4791311071.25189
2017	-2182195038.85252
2018	-7097197144.8605
2019	-8081929912.21869
2020	-8419939376.09862