Year	current US$
1970	7747292207.89087
1971	9528425376.97753
1972	10517643677.3112
1973	14396135518.9323
1974	13321339567.2318
1975	5760997358.75236
1976	8013853330.99726
1977	11425359220.1556
1978	13168561204.6608
1979	18011008750.9004
1980	24192137461.5153
1981	28987927116.3695
1982	19873971566.56
1983	15237816693.087
1984	14402539126.9554
1985	11942857765.6279
1986	13318637044.6022
1987	16219809766.899
1988	18752767824.5855
1989	21502948764.3025
1990	24725522396.9922
1991	29579254669.5714
1992	36948162137.8073
1993	40403368462.118
1994	45785779532.5175
1995	59079057169.3962
1996	63682259499.5506
1997	70028277270.9757
1998	68731016210.726
1999	61723276956.9754
2000	63000276713.4775
2001	58485743360.9836
2002	57409876255.7105
2003	60769962064.7209
2004	73374084701.4046
2005	90111561120.1944
2006	101992307076.928
2007	116357501799.831
2008	128820969591.297
2009	129135841545.072
2010	162329651756.006
2011	182125401011.874
2012	206150579012.125
2013	219136175728.405
2014	206731839692.603
2015	201607398550.396
2016	201328971166.61
2017	217107246651.451
2018	227546310534.168
2019	220029243677.644
2020	188296989141.951
2021	216294036018.233