Year	current US$
1977	10908513.07
1978	20119131.09
1979	37090724.95
1980	101760910
1981	101460464.5
1982	98050476.07
1983	117853591.9
1984	106600959.8
1985	138983184.8
1986	135285018.9
1987	136655578.6
1988	160551574.7
1989	114103614.8
1990	110884702.450238
1991	95353921.3682631
1992	135062740.510378
1993	106511248.955472
1994	62229300.7792314
1995	22338045.0010765
1996	37081634.0172496
1997	35565340.556248
1998	33510027.1789142
1999	28118441.4610098
2000	29980072.0425181
2001	41725638.8375231
2002	55576406.8879165
2003	56736548.8513943
2004	42170434.5981639
2005	56198255.1610859
2006	91752773.4395071
2007	89682356.9736026
2008	56576227.9280025
2009	130469611.001679
2010	54232641.8245913
2011	80717476.7713523
2012	72900867.5373347
2013	65130642.840141
2014	82226627.4209087
2015	75607434.9552448
2016	81209328.7727286
2017	83592863.6782188
2018	88887957.4166886
2019	86396256.2550969
2020	101578112.437275
2021	40311259.1348726
2022	32278962.9385108