Year	current US$
1970	92870000.60081479
1971	74369999.28951266
1972	104880000.82969666
1973	118020000.69618222
1974	111170001.26838678
1975	139730001.449585
1976	117649999.38011168
1977	104920001.02996832
1978	254560000.4196165
1979	405249986.1717229
1980	492820010.1852418
1981	382240007.40051305
1982	269969996.45233154
1983	176599999.9046326
1984	124999999.52316283
1985	119059999.94277948
1986	185469999.31335458
1987	361960002.4223331
1988	299690008.16345257
1989	247680001.25885022
1990	689199997.0674521
1991	992299988.150596
1992	765609988.2125847
1993	350470001.6975404
1994	241130002.97546393
1995	2908730093.1215286
1996	367430001.9741058
1997	185919997.4536898
1998	119319998.46547844
1999	136070001.244545
2000	67030000.5674362
2001	151649999.7973442
2002	18590001.165866867
2003	172329999.2084504
2004	153059998.27384937
2005	53759999.7520446
2006	39070003.9863586
2007	27220001.93595893
2008	80880002.97546381
2009	119260003.08990474
2010	164269996.6430664
2011	242480001.44958496
2012	216139998.43597424
2013	451309994.22073364
2014	917480007.1716311
2015	685870000.3623962
2016	1007330013.2751467
2017	977520012.6171119
2018	968190014.8391728
2019	636770014.2860408
2020	1025949982.6431284
2021	401480011.9400028
2022	387659995.6750876