Year	current US$
1975	134047411.38292246
1976	215781549.1344453
1977	682499423.564676
1978	816023719.7094139
1979	954745633.539116
1980	1625413197.7833314
1981	3163443203.4867883
1982	3695723236.1754293
1983	3753745573.413239
1984	3823208934.895124
1985	3624897847.997821
1986	2809043857.2596025
1987	3192590574.7752657
1988	3207028057.7499323
1989	3386270770.9071097
1990	3799509670.3895397
1991	3826750204.3040047
1992	4113320621.0841737
1993	4363116317.079815
1994	3906837374.012531
1995	4452465268.31926
1996	4883138109.506947
1997	6224734404.794334
1998	6531518039.482641
1999	7226412525.52757
2000	9465486725.663717
2001	13754663036.078966
2002	14345813478.556843
2003	15247923757.658272
2004	17018107556.160654
2005	19159972770.59224
2006	21449693669.162697
2007	23278420694.3499
2008	27131654186.521442
2009	23314635806.671207
2010	25442288277.73996
2011	29401709434.98979
2012	31095868536.419334
2013	31720297181.756298
2014	33605870197.413208
2015	33976082205.58203
2016	34442146221.91968
2017	36635868563.64874
2018	38117534622.19197
2019	37064624588.15521
2020	35966994036.759705
2021	41525151123.21307
2022	49316804383.934654