Year	current US$
1960	231469997.100532
1961	374550000.160933
1962	411990000.18835104
1963	391630001.693964
1964	281510001.376271
1965	278230000.01907295
1966	321910003.93033
1967	234319995.522499
1968	187020005.643368
1969	200999994.51637298
1970	169880002.498627
1971	230849996.089935
1972	309609997.74932903
1973	234849996.566772
1974	165709998.726845
1975	150880001.068115
1976	265139999.15122998
1977	238390004.87327603
1978	227190000.414848
1979	642619982.481003
1980	1089759992.12265
1981	833499974.489212
1982	739309999.227524
1983	445149983.406067
1984	324889996.647835
1985	294100004.196167
1986	452199990.868568
1987	521619996.547699
1988	430669996.023178
1989	305800008.06786096
1990	3750500007.8771296
1991	8986729997.42068
1992	8522470060.834661
1993	9820459947.347641
1994	9909920143.127441
1995	12067309875.13066
1996	8986440028.190609
1997	7423490000.844009
1998	9147489945.292469
1999	11859099944.114689
2000	11086320044.99435
2001	9923140130.99671
2002	11357389890.11944
2003	10626259920.15004
2004	11980080092.668541
2005	4947479958.77266
2006	6204140022.27783
2007	5956569953.91846
2008	7261619985.58044
2009	7847470006.94275
2010	7287750003.8147
2011	10442530050.2777
2012	9997339969.63501
2013	8997940103.53088
2014	10380229999.5422
2015	8548860034.46579
2016	9732459959.98383
2017	9776500093.93692
2018	8219139943.12286
2019	7293069937.70599
2020	10809940140.724201
2021	9729970041.27502