Year	current US$
1977	8475643186.762752
1978	9500399467.902056
1979	11789730121.125137
1980	12338304879.754408
1981	13362654295.669489
1982	12101479366.227581
1983	11425784003.490705
1984	12968939089.322706
1985	13480760468.299456
1986	13574767734.62527
1987	15582467384.632708
1988	17991821428.687138
1989	21118812369.10934
1990	24019786976.167656
1991	25057706479.78224
1992	28476751834.36919
1993	31311661793.80198
1994	34909624857.25066
1995	35844727242.89896
1996	38325120091.1727
1997	43996957009.82477
1998	38680048522.36766
1999	40438724637.16584
2000	44469942673.90712
2001	43317443736.85145
2002	45380997836.64407
2003	49230986111.86023
2004	55044542169.517265
2005	64073461574.1007
2006	71649812164.42743
2007	84018219031.72331
2008	96029539952.50017
2009	87286976209.98676
2010	97035891916.80988
2011	109370545337.10844
2012	115950366666.53569
2013	121617840428.49396
2014	130653042223.50446
2015	128817053588.56525
2016	132384425093.75345
2017	141861177166.35083
2018	148652401517.06168
2019	153818486121.56277
2020	99685857495.72604
2021	128574481752.17665
2022	174546049008.2052
2023	194409243219.17084