Year	current US$
1968	6795513438.566235
1969	7461823572.318054
1970	7948196132.647583
1971	10675242613.066475
1972	14374119652.406944
1973	25639945927.173126
1974	82799586885.21802
1975	73153718587.89539
1976	94318138840.10985
1977	96083519674.27945
1978	88916602598.8703
1979	142312266271.02408
1980	228170616673.8975
1981	199523201067.59235
1982	131235080599.37494
1983	93971473677.7638
1984	86075570517.27893
1985	77581643796.38916
1986	42095547427.29382
1987	55141339525.97974
1988	52837338603.11041
1989	39680858387.98273
1990	142691347966.18628
1991	64839711927.682556
1992	84359498435.98773
1993	80574900206.00403
1994	95292967890.85516
1995	112098143419.55743
1996	133638792306.51324
1997	146475804019.78387
1998	121267761431.55841
1999	179479901234.71667
2000	259343572415.93604
2001	234409832277.43372
2002	230183348804.97095
2003	281504883587.24396
2004	363143887187.8385
2005	506920152223.9215
2006	624693611147.5791
2007	703795907672.9696
2008	951252056793.5549
2009	629464373108.738
2010	881346773541.9436
2011	1127641374924.7095
2012	1225815376801.4407
2013	1185296755497.7283
2014	1078824525758.7571
2015	737329732431.0024
2016	711948529034.9673
2017	798618193782.7639
2018	1001600837761.4939
2019	940297239617.419
2020	644306046769.6855
2021	939592087694.1069
2022	1416449610004.859
2023	1226137782531.522