Year	current US$
1960	4245421666.666667
1961	4861788666.666667
1962	5084530604.166667
1963	5408442104.166667
1964	5606529937.5
1965	6125411583.333333
1966	6592150125.000001
1967	7492187562.5
1968	7728815583.333334
1969	8769129645.833334
1970	9369910312.5
1971	9140083458.333334
1972	6794941950
1973	8516602955.9182625
1974	13344222596.03314
1975	20460725675.98017
1976	11421220511.784512
1977	10166587679.379444
1978	14599741951.0582
1979	17073561274.638632
1980	20385110968.99225
1981	20718849449.204407
1982	19003792415.169662
1983	18403914141.41414
1984	20757520000
1985	22571730769.23077
1986	21984200000
1987	24632129032.258064
1988	27099229900.665707
1989	29022805546.592247
1990	31772885606.511513
1991	31676554621.84874
1992	32799856026.525196
1993	35039614656.084656
1994	35557962628.428925
1995	40213480111.94029
1996	48439779951.10024
1997	50500304449.648705
1998	51726872246.69603
1999	53318136439.26788
2000	55392387199.36394
2001	55904095626.389915
2002	56640780080.09751
2003	62862210708.11745
2004	67585221674.87685
2005	72793287190.71107
2006	75175543270.58987
2007	83935443598.82495
2008	98063371192.35927
2009	108494183882.55911
2010	121542648178.8517
2011	137351363840.06326
2012	142693920468.19812
2013	159529180646.4484
2014	184103379295.18402
2015	208276499308.00946
2016	273100368425.956
2017	305132561881.4366
2018	338624408954.9533
2019	369950024747.7816
2020	389800040453.7108
2021	439903059282.8463
2022	491525928383.43164
2023	460124561561.9321