Year	current US$
1970	52879999.22782182
1971	103399999.78244293
1972	34660000.08583069
1973	43099999.375641294
1974	-120000.17240647576
1975	31280000.09804966
1976	35609999.53188004
1977	33930000.00901516
1978	14679999.772459265
1979	9629999.90768731
1980	19949999.703094374
1981	35260000.00536446
1982	62700000.759214245
1983	89540000.5746633
1984	192050001.20960176
1985	230289996.5289981
1986	487239995.47213364
1987	422469998.45840037
1988	719290005.2908804
1989	735599984.1559677
1990	696460005.661473
1991	690209990.0245664
1992	649510000.3723049
1993	722459998.3077494
1994	1016739982.6478215
1995	283730003.6046653
1996	230980000.85167572
1997	123339998.67551027
1998	190800005.3688884
1999	62690002.48983508
2000	35729998.67051836
2001	13430001.439526591
2002	116440002.17504808
2003	160319998.71879822
2004	72440003.21626662
2005	271639999.4865061
2006	137439999.5841082
2007	141059999.65965742
2008	295180002.23860145
2009	203009999.51362607
2010	157419999.71307814
2011	176300001.02892515
2012	88830000.06712973
2013	105760001.57557434
2014	136280000.81516802
2015	155960001.23582777
2016	205619997.09345403
2017	308759997.1015007
2018	250839999.86574048
2019	178209997.31868517
2020	276210003.6926567
2021	288109998.7961351
2022	374369999.4739145