Year	current US$
1967	95000593.75371096
1968	84239932.60805391
1969	89519928.38405728
1970	117839905.72807541
1971	199711260.82771894
1972	309557993.9182798
1973	422041998.88215905
1974	1218587145.3387377
1975	1743196583.6711059
1976	2141285755.6456285
1977	2329472495.6572094
1978	2480312391.430226
1979	2973653445.2808337
1980	4486392588.303416
1981	5325420382.165606
1982	6391720034.742329
1983	6696294151.708165
1984	7700414016.3348255
1985	8734347630.973232
1986	7454277688.477468
1987	6261637971.3914175
1988	6883745643.693108
1989	7034070221.066319
1990	9391157347.20416
1991	10397399219.765928
1992	11310533159.947985
1993	11868920676.20286
1994	11857737321.19636
1995	12632249674.90247
1996	13132119635.890766
1997	14024707412.223667
1998	15090912613.784134
1999	13956565409.622887
2000	14087769310.793238
2001	15101387776.3329
2002	15875734980.494148
2003	17964912873.86216
2004	21666267100.13004
2005	22622224707.412224
2006	28094847594.278282
2007	35144450195.05852
2008	47933457737.3212
2009	40651787516.254875
2010	42743041352.40572
2011	57198959687.90637
2012	66979973992.197655
2013	72382834850.45514
2014	73601820546.16385
2015	76407282184.6554
2016	75297529258.77763
2017	78853315994.79843
2018	80558985695.70871
2019	77046236931.07933
2020	74211910013.0039
2021	78370210143.04291