Year	current US$
1960	7000000
1961	121000000
1962	86000000
1963	110000000
1964	95000000
1965	99980003.3569336
1966	84819999.6948242
1967	61459999.0844727
1968	59650001.5258789
1969	60000000
1970	39000000
1971	7000000
1972	5000000
1973	5000000
1974	-33000000
1975	82000000
1976	2000000
1977	8000000
1978	-10000000
1979	-29000000
1980	-17000000
1981	-24000000
1982	-27000000
1983	-19000000
1984	-13000000
1985	8000000
1986	-36000000
1987	-34000000
1988	-19000000
1989	-29000000
1990	-28000000
1991	-25000000
1992	-30000000
1993	-1000000
1994	-27000000
1995	-49000000
1996	-3000000
1997	-3000000
1998	-4639999.8664856
1999	-5239999.771118159
2000	-19049999.237060502
2001	-18120000.8392334
2002	-18440000.5340576
2003	-3019999.98092651
2004	-1740000.0095367401
2005	-119999.997317791
2006	-310000.002384186
2007	-1059999.9427795399
2008	949999.988079071
2009	1840000.0333786
2010	13109999.6566772
2011	3700000.04768372
2012	1669999.95708466
2013	1509999.9904632599
2014	2779999.97138977
2015	1539999.96185303
2016	1419999.95708466
2017	1250000