Year	current US$
1970	4800000.036135316
1971	4909999.988973137
1972	18930000.353604604
1973	16229999.665170912
1974	10080000.162124636
1975	13499999.949708585
1976	19819999.86618756
1977	29209999.710321385
1978	35180000.01832844
1979	77830000.9295344
1980	190619996.97797
1981	165720003.07217246
1982	113359998.46644706
1983	132519998.09034158
1984	154509998.67171055
1985	201799997.2589313
1986	174740002.5613605
1987	152890002.8765201
1988	220800002.70158058
1989	209409995.94889587
1990	197549996.2121248
1991	255479998.32592908
1992	266540000.0140071
1993	292899998.9926815
1994	495470000.7401406
1995	410049999.92810243
1996	127559998.78421427
1997	119710000.55409974
1998	102839998.39797617
1999	104769999.39605598
2000	172049999.28176403
2001	201409997.37381932
2002	254939997.62088063
2003	203450001.5582889
2004	164070000.86642805
2005	45940000.21740796
2006	25129999.81641769
2007	37999999.65727326
2008	44199999.64162707
2009	65959999.02859328
2010	42910000.37454068
2011	90820001.27434726
2012	158276201.41580695
2013	105150031.42971542
2014	3214899.9013006683
2015	82407439.70405313
2016	113378045.05229
2017	173960188.35902226
2018	85321103.2226682
2019	161958613.49999902
2020	139079351.53288418
2021	296378087.8782273
2022	162855199.560523