Year	current US$
1971	3604327275.7541904
1972	5654136709.091978
1973	7042593617.904685
1974	33874084506.6106
1975	28307272614.78971
1976	37692067987.447136
1977	35645867521.47634
1978	28366006486.990368
1979	48039817929.49734
1980	87716449504.77586
1981	89613388549.08414
1982	55518233590.67545
1983	36085607967.09004
1984	27826708211.557415
1985	17676462596.896812
1986	11846703301.957891
1987	11447028037.383177
1988	14693454383.62261
1989	13097100133.511349
1990	21353292389.853138
1991	15519369826.435247
1992	26815190743.21314
1993	21923491232.754818
1994	21532547040.49847
1995	28998122474.41036
1996	37567279572.76369
1997	40623784067.64571
1998	26076933333.333332
1999	42229866666.6667
2000	56931200000.00003
2001	49316533333.33337
2002	53986666666.666664
2003	73095120000
2004	107791066666.66664
2005	159912685159.18976
2006	186982714683.97864
2007	209599297924.92767
2008	281625880800
2009	164422356000.00003
2010	237770048000.00003
2011	351342738000
2012	374307600000
2013	345775719999.99994
2014	305905476666.6667
2015	176480518666.66666
2016	181560972533.33334
2017	217539689546.66663
2018	293588969537.85333
2019	275761728800
2020	177783532538.6485
2021	264674009292.5992
2022	444485737862.9365
2023	346608370194.5262