Year	current US$
1970	699218868.056878
1971	689022545.134815
1972	500278563.447365
1973	606093333.669933
1974	883460331.119152
1975	1459981076.78712
1976	780582277.412993
1977	718491685.096918
1978	981519623.397209
1979	1172845291.01296
1980	1360397980.93959
1981	1502135182.65662
1982	1332745625.07204
1983	1288023607.79535
1984	1380716297.74142
1985	1631389033.29034
1986	1569223828.23173
1987	1768366624.86451
1988	1985447401.56735
1989	2142637260.70585
1990	2362319685.64808
1991	2303927468.23875
1992	2397033335.94283
1993	2505942064.22082
1994	2562426844.80452
1995	2855543241.91378
1996	3533874911.73097
1997	3643209357.71296
1998	3821302942.76544
1999	3910895243.65459
2000	4017560653.85964
2001	4131248290.56241
2002	4149981382.29249
2003	4539592723.07129
2004	4847451715.82129
2005	5146589282.91123
2006	5890776069.51684
2007	6475152373.14965
2008	7336415573.70089
2009	8265761638.76624
2010	9216324271.95797
2011	10239745158.213
2012	10536854474.6145
2013	11954555152.5305
2014	13991508305.4324
2015	15828451671.3859
2016	21718854719.8736
2017	24319557261.3755
2018	26528459996.1518
2019	2900436981.26917
2020	3955876571.58695
2021	5370739514.21203