Year	current US$
1970	4018128149.57542
1971	4458717741.16145
1972	5280330504.23712
1973	6463629957.30302
1974	7569676878.59481
1975	9349772855.29343
1976	10260889106.6171
1977	11492968188.2414
1978	12931616424.6849
1979	15337650113.4095
1980	18016127148.7241
1981	16809349465.4164
1982	15176839222.4703
1983	14117122592.0449
1984	14283891961.6079
1985	15065247829.4777
1986	19585017154.3778
1987	23830873730.4747
1988	27236320906.8898
1989	29252064953.1025
1990	35477501956.1248
1991	36878422245.7861
1992	38867490326.3405
1993	30681321796.3329
1994	31511664065.7431
1995	35883532164.5043
1996	40341336112.7879
1997	37714311922.9017
1998	38803381163.5097
1999	41453451794.7389
2000	40894326694.0222
2001	39176598145.4944
2002	43699356071.2671
2003	53419116297.6969
2004	60417341371.2705
2005	62040117230.5298
2006	66093085020.8807
2007	76512398641.6634
2008	84491056110.8633
2009	77109279064.366
2010	83610957929.0887
2011	95022542889.3391
2012	93784135081.8466
2013	99371786208.1794
2014	98296914991.3547
2015	83752854871.2079
2016	85460606398.9509
2017	90628800177.0059
2018	94671758914.9964
2019	90880975632.9613
2020	96199378014.922
2021	110244746818.861