Year	current US$
1980	26214199371.4889
1981	24399417422.3004
1982	27222769447.8805
1983	27303869551.94
1984	32141643654.0022
1985	31447206090.5628
1986	31298203391.7554
1987	36548057713.0367
1988	42266388530.8219
1989	42751945975.8498
1990	130865470765.524
1994	2951135988.65591
1995	9757958692.06068
1996	7810760321.88324
1997	15148949319.9716
1998	15257378488.6869
1999	28924846121.0121
2000	37446851845.9721
2001	26579170579.4507
2002	24272620464.377
2003	16499733152.9764
2004	26551455268.8565
2005	32917811051.3261
2006	45512019899.3031
2007	65467102890.1886
2008	103379259369.646
2009	92314325674.8978
2010	110252264645.412
2011	140036615781.724
2012	168366443449.085
2013	182192898063.858
2014	174462571865.208
2015	131643914229.522
2016	131987626772.851
2017	144187924921.235
2018	168240224379.626
2019	177767447040.489
2020	149132243943.594
2021	160734736216.591