Year	current US$
1975	17021681.24762267
1976	15785737.59443567
1977	15040000
1978	25446120.07641966
1979	20916666.666666668
1980	49083333.333333336
1981	42416666.666666664
1982	-11672550.482428057
1983	3769345.076292994
1984	29095102.97962687
1985	44878103.6470489
1986	59753668.57085442
1987	49685817.083956525
1988	82656993.87893902
1989	119378032.15956518
1990	72750444.19337629
1991	72663921.44440925
1992	52160356.34743875
1993	49479166.666666664
1994	53306122.448979594
1995	137771084.3373494
1996	211371480.47229794
1997	180431351.92004207
1998	150976594.02744147
1999	70522442.97277409
2000	274330389.45996815
2001	189090368.707483
2002	41232714.342157245
2003	94019995.93599449
2004	304776889.2285884
2005	529232628.89587003
2006	554471708.8352941
2007	786550806.8806527
2008	1058596075.1380807
2009	1326638787.177169
2010	2570596758.6132874
2011	825831528.1227033
2012	1001011653.6935494
2013	1096226335.9594095
2014	1303431488.7687707
2015	907105461.2961501
2016	-113846432.2543855
2017	1955471468.4667861
2018	2355858631.909428
2019	2585711169.6319466
2020	-9675370.538130952
2021	2151890400.259473
2022	3567996509.5575004
2023	2692400797.6218143