Year	current US$
1968	3454369559.708912
1969	3739430280.6654806
1970	4016390434.1675806
1971	4396670209.362878
1972	4906479492.782881
1973	5998711178.933817
1974	7739699555.277456
1975	9567879675.221481
1976	10539380374.39113
1977	11249613318.305552
1978	12407005651.50192
1979	15323954075.71687
1980	19655805956.68681
1981	19829314754.400047
1982	19932298815.804653
1983	17010435146.533293
1984	16124312659.88491
1985	15478985197.659136
1986	17867033665.05312
1987	20347483335.269413
1988	25995380250.512146
1989	27207619472.444077
1990	28940332186.32369
1991	31557832709.281487
1992	33025766865.77696
1993	32386607414.211178
1994	36103866054.31622
1995	35479251079.3661
1996	41823898740.395424
1997	40888602703.23354
1998	42942978320.81202
1999	43785469636.68786
2000	45238765198.45953
2001	45923769235.5675
2002	45666838821.540054
2003	52122728427.03636
2004	62319475004.66477
2005	70721426963.96762
2006	77567585545.96986
2007	82935718786.34789
2008	94934000510.55928
2009	102164390464.09608
2010	104724508915.23677
2011	108664580345.10822
2012	109312276470.63695
2013	114743252043.44014
2014	115380409417.05959
2015	115776621140.24118
2016	111739871285.2193
2017	113774920540.88144
2018	123094731449.69357
2019	128811110535.95538
2020	121240535367.99532
2021	136140199773.26186
2022	139595102047.71835
2023	142288751568.86313