Year	current US$
1970	4085786770.75117
1971	4382792249.55651
1972	5741784783.03962
1973	7152424010.10523
1974	9696543628.5125
1975	11758005219.7771
1976	12975093005.187
1977	14526741524.46
1978	19187266914.3066
1979	19773775902.2845
1980	27813869828.8714
1981	31212207794.0022
1982	33943759481.2693
1983	37037997312.381
1984	41544900076.23
1985	44981952476.1817
1986	52536449982.6273
1987	53707222984.3472
1988	47369244239.3449
1989	44597412026.3568
1990	48400205176.271
1991	35425860299.2761
1992	38521776003.9985
1993	39664629250.1424
1994	33377060228.3684
1995	32046111086.2377
1996	34947253178.8965
1997	36975513772.9517
1998	38593316180.9823
1999	37150109037.8389
2000	39969924620.2215
2001	41968599079.6174
2002	42752422136.7965
2003	50383016546.9952
2004	61413738314.1801
2005	69201537821.746
2006	78821263687.4131
2007	95847938917.1649
2008	122343503123.494
2009	105062588527.001
2010	124896109895.927
2011	150591919490.774
2012	161152271436.813
2013	161726351236.125
2014	163368109451.855
2015	132830106034.379
2016	133028752187.12
2017	137393386936.339
2018	134855486664.369
2019	134133596932.454
2020	118467610587.324
2021	125758796095.107