Year	current US$
1990	2843813902.12886
1991	4901908427.00449
1992	4770104351.5899
1993	4761806437.44579
1994	6881123800.55569
1995	6468970234.86709
1996	2604545605.27153
1997	1732786113.97824
1998	953815450.496256
1999	-924161490.400032
2000	-1419453460.3191
2001	-79404384.0161085
2002	1194342428.9165
2003	2024954531.59297
2004	3654500983.07783
2005	6851919736.9919
2006	7559034352.92061
2007	10646025056.6667
2008	11220836896.0506
2009	13978707116.7636
2010	13912861570.8575
2011	9796051068.32328
2012	9450791881.27827
2013	13204830088.2397
2014	15238043239.7967
2015	14960046706.897
2016	16662295688.1841
2017	16397857407.4267
2018	14176897458.4425
2019	13853458532.0762
2020	12929359997.174
2021	4962486318.19474