Year	current US$
1960	5400000
1961	-12900000
1962	-6100000
1963	8300000.000000001
1964	7200000
1965	2300000
1966	-17700000
1967	-3600000
1968	23000000
1969	-35300000
1970	5600000
1971	21900000
1972	-17700000
1973	-5000000
1974	120100000
1975	16000000
1976	34200000
1977	59600000
1978	94700000
1979	7900000
1980	-44000000
1981	23000000
1982	-76000000
1983	52000000
1984	183500000
1985	52608695.652173914
1986	19771689.497716896
1987	110160000
1988	25687022.90076336
1989	-19140625
1990	47483613.694720045
1991	199249136.98477593
1992	280043244.2468326
1993	132214322.30718766
1994	189040689.06650975
1995	79193714.93477438
1996	-100813813.3701077
1997	-254043735.67293897
1998	145314056.0490429
1999	-98522957.76745698
2000	329797264.2322539
2001	253091679.3884096
2002	259255238.63098815
2003	358149076.30117494
2004	601067225.1014787
2005	391371485.04102206
2006	216589243.9077998
2007	424190804.8996886
2008	-598841088.9483478
2009	-783733638.9940398
2010	-359843448.02055055
2011	204500837.3346171
2012	82930821.76086234
2013	398564507.19082826
2014	-58208088.14219644
2015	193755812.51800337
2016	-6439092.8503749445
2017	-9546323.125436941
2018	69316074.32474217
2019	-38166275.979647376
2020	-152142948.72209954
2021	569192236.0243629
2022	-96280976.69613916
2023	-187023927.47701737