Year	current US$
1975	13530301558.26298
1976	14733548535.27529
1977	17099903032.807758
1978	20476470216.100426
1979	25455818376.898758
1980	32301721193.98434
1981	33253721013.97333
1982	27885201637.05017
1983	25613445149.999252
1984	25195538467.593586
1985	25580500123.35208
1986	32306242246.642532
1987	39120895575.48826
1988	42476956375.29824
1989	45713052461.72848
1990	60902808582.66752
1991	63309308385.67853
1992	72101988097.82246
1993	68866686982.7522
1994	62086901069.87162
1995	72959065684.37044
1996	73477212268.5217
1997	68981427310.41347
1998	73634473747.03053
1999	90080461348.53822
2000	83513994989.21416
2001	86273525390.57921
2002	94058148811.5323
2003	108616654733.20296
2004	124526317781.27129
2005	133315932389.04327
2006	145287009161.7453
2007	168157758171.79065
2008	193849215991.06253
2009	175302038002.3627
2010	180890350990.07074
2011	202349763505.30737
2012	202037925021.0315
2013	227686557610.96152
2014	252199767822.42374
2015	233339157906.0458
2016	236693690153.53094
2017	246915784117.36255
2018	273839439975.5735
2019	266880733097.2588
2020	227112778249.96555
2021	262433767297.79297
2022	288763138989.18274
2023	320128937126.77106