Year	current US$
1981	147009674330.537
1982	122687279920.537
1983	73552439596.7028
1984	43317103653
1985	34211332024.4404
1986	30116137459.5336
1987	26331546462.406
1988	21668687241.6558
1989	23096630581.7537
1990	28739848391.2505
1991	23776129684.5085
1992	20924326477.3219
1993	12346639258.2781
1994	14238169537.1079
1995	16408715527.2882
1996	18706802122.5
1997	20953990957.6041
1998	22177408112.5
1999	22764535463.6927
2000	23688652505.0321
2001	22894548959.6903
2002	26309802598.6455
2003	30830262524.9183
2004	36985102714.3158
2005	46128794699.3433
2006	65791757183.9315
2007	58555598719.0014
2008	67059942800.2632
2009	64358230213.6242
2010	63813637484.1981
2011	67133043641.1684
2012	68717263576.8771
2013	76750091020.8555
2014	89838197381.1845
2015	76611449511.355
2016	62181425211.4465
2017	58144087720.6293