Year	constant 2010 US$
1981	88988821833.4409
1982	65792217026.8706
1983	42589823199.8845
1984	29431379794.5104
1985	31742646195.5643
1986	22198172455.4374
1987	13953102237.8667
1988	13032011199.4905
1989	17821615130.8017
1990	21306952762.4074
1991	27815316855.181
1992	23650579787.4889
1993	28578657087.2533
1994	22405650947.4511
1995	19745190834.8747
1996	29382520462.0155
1997	39615540290.6226
1998	37025590446.9787
1999	24547009598.9301
2000	27633831064.951
2001	44459867112.0042
2002	47284564117.287
2003	72555751972.0821
2004	48457181401.6155
2005	64748008513.7527
2006	88035470567.8053
2007	110777076768.819
2008	89993066685.5181
2009	75747241713.1299
2010	64169884762.2723
2011	59143223773.4368
2012	39690040723.7621
2013	44538499077.1667
2014	47197107814.4752
2015	34538224762.8046
2016	31443052195.638
2017	32937116043.4603