Year	current US$
1977	3044446384.8658423
1978	3819874749.635722
1979	4777028169.181183
1980	5723911739.203113
1981	5800588098.021303
1982	5489538947.281663
1983	5019895258.129737
1984	5068077956.407846
1985	5570222493.199208
1986	5337790982.705282
1987	5856055358.632059
1988	6195894496.243967
1989	7465997106.960787
1990	8793971672.55574
1991	9025302674.82247
1992	10069832222.59323
1993	11330315978.34219
1994	11728539903.089474
1995	12707016638.425684
1996	13441003828.55179
1997	14448443993.167013
1998	14896791213.324284
1999	16404133737.855522
2000	16963216742.02875
2001	17513401837.8815
2002	18915665447.24133
2003	20559894194.805706
2004	24726249623.221138
2005	25926963041.395634
2006	29649409270.08116
2007	35652348122.28676
2008	41199858840.93999
2009	39749079213.464584
2010	47448885867.52435
2011	56187745814.594025
2012	61773383784.952515
2013	66290466329.756905
2014	70202398516.56625
2015	73112411515.80676
2016	74412527770.22655
2017	82164106089.32286
2018	92287275034.84161
2019	99087178475.03989
2020	62180382812.84423
2021	77028759789.57411
2022	99304885061.0843