Year	constant 2021 US$
1960	139490005.493164
1961	882979980.46875
1962	1012719970.70313
1963	952150024.414063
1964	781500000
1965	732239990.234375
1966	852880004.882813
1967	640729980.46875
1968	473880004.88281304
1969	438519989.013672
1970	343500000
1971	170210006.71386698
1972	216830001.831055
1973	196320007.32421902
1974	70370002.746582
1975	451540008.544922
1976	43380001.0681152
1977	39610000.6103516
1978	17559999.4659424
1979	-88580001.8310547
1980	-23540000.915527303
1981	3970000.02861023
1982	5989999.771118159
1983	32240001.678466797
1984	44529998.779296905
1985	140899993.89648402
1986	12069999.6948242
1987	46130001.0681152
1988	84220001.2207031
1989	119739997.86377
1990	161820007.32421902
1991	184479995.727539
1992	184770004.272461
1993	261209991.455078
1994	208000000
1995	162050003.05175802
1996	237669998.168945
1997	173070007.32421902
1998	147490005.493164
1999	95559997.55859381
2000	74669998.1689453
2001	87540000.9155273
2002	17350000.3814697
2003	108599998.47412099
2004	77430000.3051758
2005	205470001.220703
2006	115690002.441406
2007	112720001.22070299
2008	100300003.05175799
2009	77489997.8637695
2010	188970001.220703
2011	160880004.882813
2012	126440002.441406
2013	79849998.4741211
2014	248679992.67578098
2015	61790000.9155273
2016	209779998.779297
2017	79150001.5258789