Year	current US$
1976	968390804.5977012
1977	913793103.4482758
1978	879310344.8275862
1979	928904428.9044288
1980	960000000
1981	1592128801.4311268
1982	1502100840.3361344
1983	1323076923.0769231
1984	1384615384.6153846
1985	859375000
1986	1148000000
1987	1463333333.3333333
1988	1322222222.2222223
1989	1722222222.2222223
1990	3511111111.111111
1991	4643473260.494536
1992	869837425.0759504
1993	1349849981.7969544
1994	1363217303.3296616
1995	766086965.5037065
1996	1082801936.6929114
1997	1048337197.1190734
1998	1150492101.9173625
1999	1104924007.247662
2000	3050600394.7534733
2001	3226727459.8853273
2002	3911516913.0341983
2003	4714142508.680629
2004	6291583800.236521
2005	7461119029.185676
2006	10360518536.904573
2007	12664391151.232578
2008	13400290312.28665
2009	11524866961.538462
2010	12027586206.896553
2011	12798657894.736843
2012	7422766666.666667
2013	7398000000
2014	7448078651.685392
2015	6625232323.232323
2016	3967146666.6666665
2017	4445681904.761905
2018	3229934567.5675673
2019	4625964758.677686
2020	1564366292.5531914
2021	1186329638.455638
2022	1125441097.5574324
2023	2205522122.535211