Year	current US$
1972	12472562.167147558
1973	17435958.171075385
1974	21496402.4898389
1975	22400265.445394438
1976	23258713.275227662
1977	24992778.00845624
1978	28591103.553314187
1979	32959619.16728041
1980	34451781.646417916
1981	39542403.74546001
1982	42325331.99478313
1983	49068963.216903284
1984	53331611.76813595
1985	52554224.15678351
1986	70707845.43842663
1987	84112240.4171696
1988	96013249.62725604
1989	94599065.43384737
1990	98685111.27820103
1991	102276240.8212024
1992	115759761.89552964
1993	126804646.4051193
1994	138081524.84336385
1995	155071552.3392182
1996	135907614.798427
1997	129562906.30551001
1998	133821729.5055454
1999	140859417.48166937
2000	149217171.6440941
2001	158497889.59260243
2002	159455521.41489136
2003	165226502.18758756
2004	175934256.27449363
2005	187243280.65928346
2006	184052770.39155582
2007	193426916.697098
2008	188017672.70579204
2009	193543471.52811027
2010	198362359.01441363
2011	200461027.84693885
2012	198326443.38979098
2013	219889258.64750662
2014	226639878.45149097
2015	242817330.71085408
2016	240463794.94615978
2017	246336900.60163707
2018	273269719.6448375
2019	297111129.5564311
2020	281245087.99180555
2021	274257975.8232044
2022	302098763.2480649
2023	318042322.1809174