Year	current US$
1970	348162774.518631
1971	617079177.764044
1972	1255940461.73531
1973	2664302348.73308
1974	13587675437.8077
1975	9817317754.06341
1976	15060025611.9938
1977	17482056145.7048
1978	15244974158.1494
1979	45463703096.4856
1980	54775484943.2748
1981	48454720858.1104
1982	20248374161.6247
1983	13108373788.8346
1984	10796552276.8181
1985	5747897272.76552
1986	5674613322.62968
1987	5637483946.06632
1988	4469145166.67363
1989	6141966684.0483
1990	12993354109.7413
1991	11129493617.4301
1992	12068693371.6172
1993	11173958706.5418
1994	10246611310.5451
1995	11862903919.5709
1996	16272100294.017
1997	15033943368.9185
1998	9981630526.36102
1999	12792444139.9764
2000	24249942216.6304
2001	18301187030.1502
2002	16914469403.398
2003	25517844350.1213
2004	36224962196.3264
2005	52105965462.8466
2006	59525169111.5089
2007	61016919992.4212
2008	90270489953.5137
2009	43416919822.4322
2010	58239731025.5496
2011	106704799707.928
2012	117547302394.557
2013	110746133532.305
2014	102809477679.224
2015	55798069892.5609
2016	46940278005.6334
2017	52796100785.7415
2018	75962310829.9086
2019	63237847614.9551
2020	36335741112.9296
2021	62424177107.2813