Year	current US$
1960	3000000
1961	85000000
1962	21000000
1963	-18000000
1964	-55000000
1965	37860000.6103516
1966	29010000.2288818
1967	15090000.1525879
1968	6449999.80926514
1969	13000000
1970	4000000
1971	-2000000
1972	-1000000
1973	-2000000
1974	2000000
1975	-3000000
1976	-2000000
1977	-7000000
1978	-4000000
1979	12000000
1980	9000000
1981	9000000
1982	11000000
1983	35000000
1984	17000000
1985	57000000
1986	52000000
1987	62000000
1988	47000000
1989	18000000
1990	23000000
1991	25000000
1992	11000000
1993	20000000
1994	1000000
1995	3000000
1996	26000000
1997	8000000
1998	7989999.771118159
1999	11939999.5803833
2000	23809999.4659424
2001	41819999.6948242
2002	83970001.2207031
2003	57490001.6784668
2004	42770000.4577637
2005	128399993.896484
2006	153520004.272461
2007	83610000.6103516
2008	102529998.77929701
2009	129429992.675781
2010	205029998.779297
2011	372109985.35156304
2012	210940002.44140598
2013	217809997.55859402
2014	229100006.10351598
2015	254039993.28613302
2016	135479995.727539
2017	185839996.33789098
2018	232660003.66210902
2019	157949996.94824198
2020	173990005.493164
2021	152589996.33789098
2022	166500000