Year	current US$
1964	31500000
1965	30799999.237060502
1966	24399999.6185303
1967	27399999.6185303
1968	26000000
1969	24600000.3814697
1970	21399999.6185303
1971	22299999.237060502
1972	30379999.1607666
1973	23350000.3814697
1974	17829999.9237061
1975	20780000.6866455
1976	20690000.5340576
1977	21799999.237060502
1978	19030000.6866455
1979	35740001.6784668
1980	53950000.762939505
1981	51490001.6784668
1982	94160003.6621094
1983	51470001.220703095
1984	56500000
1985	46819999.6948242
1986	95470001.2207031
1987	102440002.441406
1988	107430000.30517599
1989	107069999.69482401
1990	142970001.220703
1991	138130004.882813
1992	132000000
1993	119209999.084473
1994	92290000.9155273
1995	91400001.5258789
1996	101819999.69482401
1997	310950012.207031
1998	68930000.3051758
1999	79300003.0517578
2000	46470001.220703095
2001	41689998.626709
2002	46330001.8310547
2003	128139999.389648
2004	484510009.765625
2005	88220001.2207031
2006	103819999.69482401
2007	141970001.220703
2008	88419998.1689453
2009	97470001.2207031
2010	84019996.6430664
2011	89250000
2012	73360000.6103516
2013	74419998.1689453
2014	65220001.220703095
2015	99389999.3896484
2016	51130001.0681152
2017	54599998.4741211
2018	69849998.4741211
2019	77669998.1689453
2020	82849998.4741211
2021	106269996.64306599
2022	79389999.3896484