Year	current US$
1960	409630000
1961	373640000
1962	361640000
1963	497600000
1964	657900000
1965	657200000
1966	717940000
1967	907660000
1968	765730000
1969	809490000
1970	1454330000
1971	1723670051.91648
1972	2726313448.02814
1973	4252739852.76161
1974	4630400853.53764
1975	4884353236.26624
1976	5177801642.43799
1977	5742423548.22825
1978	5087845255.40119
1979	7590774184.40249
1980	11645310360.446
1981	9339082036.99989
1982	10132475330.6239
1983	10170680313.5305
1984	9236747881.72668
1985	10781983743.4095
1986	11191295720.0347
1987	16003065527.9547
1988	16074828248.8461
1989	16508496570.0318
1990	17483662887.1406
1991	17797510477.907
1992	21937303876.1395
1993	31343727621.6455
1994	34532363729.2099
1995	33713766516.0362
1996	26766996986.3337
1997	24865299069.0169
1998	21417781345.0856
1999	9885739246.57154
2000	9642506096.92982
2001	9034321707.96264
2002	9563259232.80909
2003	11167016093.5686
2004	10654802011.4761
2005	8985960846.69697
2006	10802424563.5363
2007	10269699023.4142
2008	11476397025.0888
2009	17870503511.1936
2010	18471183450.9493
2011	20264123069.4659
2012	22050302189.2564
2013	22591403546.113
2014	19307045590.6256
2015	17341291383.3571
2016	13341855978.2734
2017	12892609300.0802
2018	13194707104.824
2019	13330656622.8042
2020	16733754575.3332
2021	28629843991.37
2022	27665671741.2206
2023	29218970743.2849