Year	current US$
1970	14780000.008642662
1971	21559999.763965607
1972	22980000.115931034
1973	53149999.726563595
1974	87360000.51349398
1975	163230002.88009644
1976	172790001.58607954
1977	197760000.2121184
1978	168479997.2847104
1979	184479996.04046348
1980	219409997.7016448
1981	172269999.11852172
1982	165740001.42700967
1983	138369999.62292615
1984	150679999.1261215
1985	126199999.51496723
1986	208160003.49819657
1987	155529999.63052577
1988	225949998.01367515
1989	366830000.9481611
1990	311770003.0487032
1991	323979997.9906528
1992	536679993.93865454
1993	355199996.1528927
1994	477440001.7559527
1995	393170001.7172844
1996	467159999.4953723
1997	402919998.85439867
1998	277460000.85584813
1999	306240001.45308673
2000	336960000.35852176
2001	316389998.1714785
2002	280369998.516515
2003	351260003.0340255
2004	445160000.5440416
2005	372440003.3392012
2006	702630000.0716
2007	445719998.23115784
2008	432109996.7062472
2009	389260000.3052504
2010	358689999.8430164
2011	447039998.533204
2012	403779997.5443633
2013	423040003.7001819
2014	399339996.5986608
2015	280849997.8967012
2016	310069999.2608282
2017	322469999.9131262
2018	354430000.8304415
2019	353070004.37378883
2020	376950002.89194274
2021	455660001.9857288
2022	530049997.5755812