Year	current US$
1976	1935942503.079977
1977	2296616423.7533674
1978	2948384458.0777097
1979	3940958868.9887557
1980	4212469581.270454
1981	4773131012.943623
1982	5346504317.828489
1983	5537086970.0533495
1984	5491527187.130169
1985	5769781438.0741205
1986	6747798357.554734
1987	6897733551.183452
1988	6187682344.265974
1989	4014786555.651472
1990	4117599199.6528616
1991	4236516436.420676
1992	5231547267.0626545
1993	5269386924.461392
1994	5611134964.934879
1995	5932077625.570776
1996	6565162200.282087
1997	6995486600.846263
1998	7727644569.816644
1999	7848236953.455571
2000	8825669957.686884
2001	9331394405.789701
2002	9496332863.187588
2003	10208180535.96615
2004	11737658674.189
2005	13514104372.35543
2006	15909026798.307476
2007	18352186177.71509
2008	21019717698.582573
2009	21952112676.05634
2010	23115492957.74648
2011	27708450704.225353
2012	30487323943.661972
2013	35232394366.19718
2014	36797183098.59155
2015	37597183098.59155
2016	38504225352.11268
2017	39918309859.15493
2018	40485915492.95775
2019	40526760563.38029
2020	42111267605.633804
2021	43840845070.42254