Year	current US$
1980	22608561.1879811
1981	35329704.8852699
1982	29589299.3051921
1983	30275637.2110099
1984	11132842.0378829
1985	5985743.3573447
1986	10462524.1353947
1987	7824291.16875199
1988	8536235.98501388
1989	8054236.61440108
1990	22439381.3467856
1991	26479358.1136812
1992	33285253.8986229
1993	46644047.7029991
1994	71166218.5943583
1995	55217941.48484
1996	50894994.289189
1997	60187444.6317438
1998	51738930.836302
1999	59949083.1711646
2000	62607849.971903
2001	92624430.463346
2002	66735024.2989497
2003	57470135.3902855
2004	68690608.1116028
2005	86560374.7716253
2006	98937608.658852
2007	75476694.8259095
2008	49496501.2440107
2009	80708893.7942758
2010	73987846.4130522
2011	68141823.9316296
2012	67409009.2903386
2013	58705986.0398508
2014	60555657.4723766
2015	63550482.2362577
2016	58005428.9468527
2017	68409561.1721893
2018	71630385.8656183
2019	74555981.3726961
2020	73366860.5772905
2021	82596198.461846