Year	current US$
1967	51884346.06700565
1968	71805881.57695863
1969	72251729.98733261
1970	70270902.53320822
1971	76349769.0558969
1972	112840007.41712336
1973	149453189.48026294
1974	169467845.55088064
1975	193094268.24050254
1976	235565546.89524937
1977	262812569.03424823
1978	338122381.576973
1979	410276003.696173
1980	770765564.136104
1981	662309229.9881825
1982	605044592.6846073
1983	606790720.1259993
1984	558507894.4647568
1985	602342185.0601115
1986	801834890.750231
1987	867020971.3119696
1988	885999372.7207749
1989	886518952.9128833
1990	1101477096.2596896
1991	1065689058.3278838
1992	1180230445.8232918
1993	1110406718.3255877
1994	847699273.422572
1995	1041667698.256951
1996	1051948087.901762
1997	988216460.8424922
1998	1096220052.7322762
1999	1284576193.8913784
2000	1103527563.8702097
2001	1244170936.9229267
2002	1379070428.1900625
2003	1756654226.466596
2004	1993370354.899796
2005	2173573868.9459157
2006	2388849130.4384236
2007	2932258942.9439235
2008	3614239578.0631776
2009	3500448697.5357933
2010	3789653890.529555
2011	4772839380.119487
2012	4257504683.0581117
2013	5068349677.464018
2014	5359721950.861975
2015	4883629687.58443
2016	4999267514.534098
2017	5360630010.759369
2018	5795282601.117964
2019	5788366304.867527
2020	6012717246.486909
2021	6835772759.009229
2022	6792364177.595371
2023	7551590022.659704