Year	current US$
1970	10390914475.188658
1971	11834333196.255354
1972	14016005288.92729
1973	19142926883.21537
1974	23743887825.999397
1975	22549158176.11281
1976	25019703152.504402
1977	30058298314.95735
1978	40275430648.76958
1979	49698923437.78192
1980	59517921465.65614
1981	53574921087.46564
1982	50418601191.94208
1983	50567866228.38359
1984	48699438226.15653
1985	50189738716.372955
1986	68619330146.200455
1987	79510329935.62231
1988	88624908767.85349
1989	90759218778.65396
1990	109363359487.47481
1991	103277820781.03209
1992	106791215332.10071
1993	100338629534.38008
1994	108768565474.88486
1995	127841108668.0761
1996	128303188511.32686
1997	123738813477.57182
1998	128123228721.20293
1999	128192899081.34737
2000	129833035883.46754
2001	131361304811.56673
2002	133686909405.87708
2003	154297493131.35812
2004	178598603940.49054
2005	202479147124.95984
2006	219209651459.56293
2007	254100847217.59415
2008	304331677592.0968
2009	286895607021.41345
2010	330730423611.2392
2011	423135338258.47473
2012	402767274887.9212
2013	435220774562.4029
2014	398696001148.51434
2015	370031118266.23975
2016	390368282229.5664
2017	398164579098.364
2018	413213693521.7222
2019	412350588412.8701
2020	428062579952.246
2021	479655828162.11725
2022	517523299636.32367
2023	556539459537.6687