Year	current US$
1968	49000000
1969	89400000
1970	158073104.10000014
1971	151218693
1972	394968156
1973	451346816.5999999
1974	439110909.4000001
1975	798666646.9000001
1976	729435006
1977	729073573.1999998
1978	804751470.0000005
1979	1116785360
1980	601116841
1981	763661737.6000004
1982	560475359.5
1983	460593006.4000006
1984	-243146307
1985	677903762.1827098
1986	1022364485.5118206
1987	954458939.6263692
1988	1151676623.917774
1989	1250510264.511041
1990	1143261379.3063002
1991	1370361290.7732627
1992	1375649000
1993	2098186400
1994	2682460856.415028
1995	2985838904.4289045
1996	3577746750.4407644
1997	4222395841.3088293
1998	5598166701.01314
1999	5470700603.305582
2000	5621898376.116664
2001	6066883212.303761
2002	6458278104.073405
2003	5058099989.785495
2004	5528339643.107857
2005	7870673401.77965
2006	8720069766.998743
2007	9979751571.601131
2008	9678513038.712185
2009	8768870829.96473
2010	9976433820.823017
2011	9941303814.326906
2012	10656486607.243927
2013	11440273227.864439
2014	13158276155.770447
2015	15191482690.579142
2016	16343761085.30041
2017	17605288519.82812
2018	20573139630.00762
2019	21624206681.932922
2020	18015545611.08182
2021	26252924132.41601
2022	31426999182.096806
2023	33381977679.16916