Year	constant 2021 US$
1960	233960006.71386698
1961	380410003.66210896
1962	368260009.765625
1963	242919998.168945
1964	-41150001.5258789
1965	-479899993.89648396
1966	-123760002.13623
1967	62090000.1525879
1968	-43560001.373291
1969	54729999.5422363
1970	-34630001.0681152
1971	32490001.678466797
1972	8960000.03814697
1973	67059997.55859381
1974	70510002.1362305
1975	47340000.1525879
1976	54970001.220703095
1977	55979999.5422363
1978	46959999.0844727
1979	70430000.3051758
1980	102949996.94824201
1981	95639999.3896484
1982	82309997.55859381
1983	96080001.8310547
1984	92959999.0844727
1985	111730003.35693401
1986	156690002.44140598
1987	147979995.727539
1988	244029998.779297
1989	352959991.455078
1990	258950012.207031
1991	400320007.324219
1992	359570007.324219
1993	374700012.207031
1994	239160003.66210902
1995	175750000
1996	160649993.89648402
1997	138919998.168945
1998	101220001.22070299
1999	102269996.64306599
2000	92540000.9155273
2001	268160003.662109
2002	162770004.272461
2003	161600006.10351598
2004	117629997.253418
2005	110580001.831055
2006	131429992.675781
2007	96639999.3896484
2008	124099998.47412099
2009	116599998.47412099
2010	127279998.77929701
2011	96680000.3051758
2012	185139999.38964802
2013	37069999.6948242
2014	49880001.0681152
2015	-20620000.8392334
2016	4840000.15258789
2017	600000.023841858
2018	81510002.1362305
2019	12680000.3051758
2020	108099998.47412099
2021	155259994.506836
2022	407309997.558594