Year	current US$
1976	8978041284.021105
1977	10281565393.93099
1978	12076779451.924171
1979	15460638580.972157
1980	20018047583.899807
1981	22254753941.813766
1982	18366812900.88858
1983	15174589923.533068
1984	15747832530.823845
1985	16276352995.37523
1986	17164592962.383142
1987	17615557589.540127
1988	19706786287.923885
1989	22401618533.98063
1990	27197112536.663277
1991	28655302255.22164
1992	32357432793.072536
1993	37145860261.310555
1994	40303905420.58574
1995	41813187423.35787
1996	42604503398.54127
1997	51393495758.86714
1998	53969130873.21923
1999	50689403112.63882
2000	57664171217.08801
2001	57281412289.04984
2002	55371948094.58349
2003	58024375121.8582
2004	65559298749.808464
2005	78163028189.26201
2006	88563708440.74321
2007	106517091821.42892
2008	127255695476.54271
2009	117664518320.62646
2010	147999766948.73856
2011	173876630799.93542
2012	186154719345.55783
2013	198125909474.05527
2014	208439045136.67392
2015	189553756325.93082
2016	182829367189.55685
2017	200195855935.02866
2018	205988531967.06015
2019	201319752971.44333
2020	144300782397.18204
2021	182089909196.83328
2022	240746606733.74472
2023	250192064331.35672