Year	current US$
1964	30228758.169934638
1965	27731092.43697479
1966	27731092.43697479
1967	27209944.751381215
1968	25570228.091236494
1969	27010804.32172869
1970	29651860.74429772
1971	37906137.18411552
1972	39700374.531835206
1973	51102941.176470585
1974	57660818.7134503
1975	70243362.83185841
1976	53009883.19856244
1977	62129144.851657934
1978	73352435.53008597
1979	90350047.30368969
1980	92666666.66666667
1981	77739430.54357204
1982	111057304.27764325
1983	88381962.86472149
1984	75378486.0557769
1985	67805261.09148018
1986	30922197.36515039
1987	61862938.04893811
1988	70738758.68856493
1989	67945095.54779062
1990	50671526.48468761
1991	76007450.0507958
1992	57801361.63396075
1993	77649339.20704846
1994	97574569.62672575
1995	76627383.47457628
1996	102373194.30867818
1997	76578706.06214976
1998	60051163.98055768
1999	76745926.17226471
2000	91140480.85655563
2001	141983183.96938878
2002	174516436.39828488
2003	163894118.14813235
2004	150118091.2893792
2005	163170666.54485
2006	190376544.31652018
2007	186633596.7005071
2008	241868311.91525114
2009	257981687.4160058
2010	268107409.41563115
2011	296410113.02867085
2012	389742447.004377
2013	428354743.99417055
2014	358363368.3881067
2015	432240937.74625695
2016	457066696.97962147
2017	389245916.27358747
2018	377487634.3229237
2019	349214653.0035168
2020	328677476.44514555
2021	311244029.2449057
2022	478229454.748659
2023	336167190.03923476