Year	current US$
1970	7260000.229
1971	25953769.8046
1972	37047825.399
1973	37142167.332
1974	106117469.39889999
1975	350594846.73623896
1976	859342558.4692003
1977	1658987724.9014962
1978	2815254576.1565766
1979	3577932019.2861724
1980	4684070345.984944
1981	4626830844.8713665
1982	5488001198.321753
1983	6136031977.168224
1984	5386996294.482828
1985	5284418334.242267
1986	5352386175.340246
1987	5770024863.992399
1988	5601014745.284119
1989	6034976138.996167
1990	7329089123.506604
1991	6387178772.930223
1992	7239985289.013283
1993	7739801899.433899
1994	8405308319.667273
1995	8341743040.8931875
1996	8020986464.886749
1997	9504487741.957424
1998	9568690885.320255
1999	11025133105.691338
2000	11798449687.678873
2001	12193437221.417568
2002	16670215026.397076
2003	19522078508.512047
2004	23718139405.97228
2005	40225574137.057594
2006	47517347743.10977
2007	54482362006.64332
2008	66215428883.69676
2009	67212276122.30501
2010	76562743747.05269
2011	88706063234.49364
2012	98922691068.57715
2013	103979731045.33528
2014	111259102778.21321
2015	114322742899.92233
2016	111950160388.80693
2017	119458471710.9903
2018	133350642283.10995
2019	140561937229.75125
2020	140774870389.40057
2021	156451646887.6915
2022	170043364720.29962