Year	current US$
1970	175800003.05175802
1971	203589996.33789098
1972	232509994.506836
1973	82919998.1689453
1974	50189998.626709
1975	58490001.6784668
1976	126029998.77929701
1977	93010002.1362305
1978	175610000.61035198
1979	583419982.910156
1980	952929992.675781
1981	727099975.585938
1982	647500000
1983	355859985.35156304
1984	240479995.727539
1985	180100006.10351598
1986	339959991.455078
1987	378869995.11718804
1988	287339998.72207654
1989	155260003.8144734
1990	1314909975.7764513
1991	2056720041.537662
1992	884930004.1291871
1993	1205470001.9359589
1994	1895690031.0516357
1995	2716439998.626709
1996	2867939987.1826177
1997	2489249982.8338637
1998	2780269952.7740483
1999	4220130017.280585
2000	4196810035.7055674
2001	4227790077.2094755
2002	5461939880.3711
2003	4482259945.869447
2004	4710689981.460576
2005	4873249961.137779
2006	5910140022.277832
2007	5648739955.9021
2008	6923129980.087282
2009	7475910011.291512
2010	7066259998.321531
2011	10248660049.438477
2012	9791779972.076422
2013	8756000102.996832
2014	10142060001.373287
2015	8392490032.196053
2016	9600769960.403446
2017	9626980091.094967
2018	8053829940.795911
2019	7067189931.869507
2020	10617860145.568857
2021	9445320037.841808