Year	current US$
1975	2003425383.50598
1976	2248010275.69695
1977	2911206003.64395
1978	4022945156.21254
1979	4061187652.51249
1980	4315203124.1779
1981	4146006403.55711
1982	4766097919.2452
1983	4972754453.53014
1984	5150839232.89337
1985	4825846062.83702
1986	5766661294.57267
1987	8358766275.19801
1988	13348719426.0315
1989	17202804016.0855
1990	17980561763.7708
1991	22267617326.4688
1992	24896895333.5708
1993	30865886734.0989
1994	34396114149.9427
1995	38858554838.8891
1996	38522885547.8937
1997	24479161811.9097
1998	14474424574.5406
1999	16083793882.9092
2000	15898604667.2802
2001	11193525441.9145
2002	14736442340.2303
2003	18227499133.6038
2004	22130448455.2314
2005	25268046566.2986
2006	35143103393.4281
2007	47436610385.7996
2008	45424529320.5417
2009	39104956615.857
2010	50856269184.6377
2011	59546776258.3544
2012	52021307751.1013
2013	46575558088.4258
2014	43786093111.562
2015	44071947623.4023
2016	53826380951.3075
2017	68320919390.7408
2018	74617257740.0253
2019	78482356587.7943
2020	44827292409.0803
2021	45663406119.3214