Year	current US$
1970	685986701.3469204
1971	939893599.6141399
1972	1415086929.2130854
1973	4231243615.8714213
1974	11651505689.534113
1975	14720728248.535488
1976	19213158778.79277
1977	24871775164.604256
1978	23775764224.68313
1979	31225659620.995075
1980	43599160050.332245
1981	49333424135.11305
1982	46622718605.28467
1983	42803323345.137566
1984	41807954235.90302
1985	40603650231.54454
1986	33943612094.79706
1987	36384908744.21139
1988	36275674203.214386
1989	41464995913.919914
1990	50701443748.29747
1991	51552165622.446205
1992	54239171887.769005
1993	55625170253.33697
1994	59305093979.84201
1995	65743666575.86489
1996	73571233996.18633
1997	78839008444.56552
1998	75674336283.18584
1999	84445473110.95984
2000	104337372362.15112
2001	103311640571.81757
2002	109816201497.61743
2003	124346358066.71205
2004	147824370319.94556
2005	180617467964.60178
2006	222116541865.21445
2007	257916133424.09802
2008	315474615738.5977
2009	253547358747.44727
2010	300189052688.90405
2011	360832739550.7148
2012	384610125391.4227
2013	400218529748.128
2014	414105366752.8931
2015	370275469571.13684
2016	369255326235.53436
2017	390516804029.95233
2018	427049432157.9306
2019	417989721742.6821
2020	349473015330.15656
2021	415178792756.97754
2022	507063968277.74
2023	504173451327.43365