Year	current US$
1960	7289999.96185303
1961	1039999.96185303
1962	29440000.5340576
1963	7579999.92370605
1964	4619999.88555908
1965	-8250000
1966	16020000.4577637
1967	10470000.2670288
1968	11239999.7711182
1969	10319999.6948242
1970	11869999.8855591
1971	7039999.96185303
1972	8100000.38146973
1973	12520000.4577637
1974	16620000.839233398
1975	19770000.4577637
1976	-2049999.9523162802
1977	-5420000.07629395
1978	-4539999.96185303
1979	-14130000.1144409
1980	-5800000.19073486
1981	9670000.07629395
1982	8520000.45776367
1983	11470000.2670288
1984	10970000.2670288
1985	15199999.8092651
1986	16200000.7629395
1987	26129999.1607666
1988	18180000.3051758
1989	16840000.1525879
1990	20379999.1607666
1991	22680000.3051758
1992	30700000.762939498
1993	37409999.8474121
1994	42130001.0681152
1995	44599998.4741211
1996	42959999.0844727
1997	33770000.4577637
1998	39590000.1525879
1999	29620000.8392334
2000	21870000.8392334
2001	18010000.2288818
2002	18729999.5422363
2003	30989999.7711182
2004	27440000.5340576
2005	35150001.5258789
2006	36330001.8310547
2007	27450000.762939498
2008	20049999.237060502
2009	11520000.4577637
2010	71839996.3378906
2011	36459999.0844727
2012	47750000
2013	25600000.3814697
2014	162460006.71386698
2015	7349999.90463257
2016	135169998.168945
2017	24629999.1607666