Year	current US$
1975	-520672187.313933
1976	164379781.359039
1977	-66555131.4078519
1978	184652520.562433
1979	634084020.824827
1980	1425112198.54368
1981	-370692192.450532
1982	-2274373903.49215
1983	-1265160234.73667
1984	-1056364432.71394
1985	-1232794321.26729
1986	-675825845.218924
1987	709090294.374461
1988	2309635460.56379
1989	2845870042.8825
1990	3089814787.63568
1991	3307620327.29588
1992	3884703704.76075
1993	3919515113.94627
1994	4776094381.98879
1995	8476185146.99456
1996	9524167091.749
1997	10574464105.7137
1998	8758979025.39933
1999	6804162916.01394
2000	7469487800.55499
2001	7041766778.2985
2002	7193091698.95933
2003	8158707775.62856
2004	11488282546.5966
2005	15072713541.6748
2006	23164855379.7343
2007	25697421745.2596
2008	20717833270.0548
2009	19982919663.9255
2010	29752385054.3582
2011	22927550268.1143
2012	28168637866.6323
2013	27198211620.0637
2014	23514302825.9286
2015	24418108010.8239
2016	15003015082.8302
2017	13325596708.6624
2018	11063290156.2052
2019	9777353094.25615
2020	8144083513.54722
2021	5148692383.23521