Year	current US$
1960	32000000
1961	11000000
1962	11000000
1963	29950000
1964	36920000
1965	18270000
1966	17060000
1967	63490000
1968	125290000
1969	144210000
1970	136000000
1971	90869850.7657021
1972	123184110.56803
1973	172793040.041502
1974	118795966.553744
1975	47906345.9335608
1976	50275633.9899451
1977	133866441.378014
1978	125749273.568513
1979	206688079.856883
1980	204110000
1981	151548190.781431
1982	38872062.1490983
1983	101564666.829246
1984	137370000
1985	189708699.472759
1986	268620000
1987	180773492.885415
1988	186940000
1989	195084973.585302
1990	219070000
1991	182850000
1992	156730000
1993	46200000
1994	120690000
1995	146600000
1996	82500000
1997	82500000
1998	82500000
1999	82500000
2000	82500000
2001	82500000
2002	73858396.5161329
2003	97757335.84787
2004	236242009.298167
2005	131200257.922625
2006	154503797.163646
2007	180677436.98623
2008	77733370.4394543
2009	1035381387.91635
2010	1299652041.01224
2011	1267500302.99162
2012	1632551644.22764
2013	1678465311.80225
2014	1556982977.84139
2015	1215934551.45168
2016	708160749.155332
2017	695398161.997957
2018	665272094.992908
2019	1194373484.64689
2020	747655324.338114
2021	3467115960.59408