Year	current US$
1964	25700000.762939498
1965	24200000.762939498
1966	18600000.3814697
1967	24399999.6185303
1968	29000000
1969	26299999.237060502
1970	24899999.6185303
1971	23000000
1972	23260000.2288818
1973	32799999.2370605
1974	37090000.1525879
1975	52299999.237060495
1976	54319999.6948242
1977	55700000.762939505
1978	51360000.6103516
1979	86589996.3378906
1980	118300003.05175799
1981	66559997.55859381
1982	74129997.253418
1983	105940002.441406
1984	79919998.1689453
1985	72790000.9155273
1986	90279998.7792969
1987	183350006.10351598
1988	162759994.506836
1989	196529998.779297
1990	416290008.544922
1991	309649993.89648396
1992	446079986.57226604
1993	584989990.234375
1994	649719970.703125
1995	515969970.703125
1996	300299987.792969
1997	133649993.896484
1998	190910003.66210902
1999	201330001.831055
2000	156259994.506836
2001	110400001.52587901
2002	531289978.027344
2003	116470001.22070299
2004	62159999.8474121
2005	54900001.5258789
2006	106819999.69482401
2007	50689998.626709
2008	39490001.6784668
2009	1199060058.59375
2010	138520004.272461
2011	553210021.972656
2012	1279020019.53125
2013	81050003.0517578
2014	67919998.1689453
2015	22190000.5340576
2016	15829999.923706101
2017	11640000.3433228
2018	297070007.324219
2019	355549987.792969
2020	278950012.207031
2021	359540008.544922
2022	588190002.441406