Year	current US$
1960	12329999.694600683
1961	9770000.45776367
1962	8730000.229552392
1963	17020000.53226946
1964	19300000.90971585
1965	16239999.642595602
1966	17329999.689012747
1967	16010000.204667486
1968	16560000.918805556
1969	14350000.251084562
1970	18580000.910907943
1971	9180000.333115455
1972	14980000.115931034
1973	26779999.844729923
1974	15800000.263378028
1975	29929999.887943264
1976	27269999.969750628
1977	19400000.153109428
1978	27230000.037699938
1979	14579999.782145038
1980	11469999.76411462
1981	49279999.92854893
1982	20790000.185370456
1983	34129999.2389977
1984	5639999.898150561
1985	5569999.920204284
1986	1679999.982938168
1987	300000.0789761579
1988	-670000.0390410428
1989	-2410000.1174956514
1990	3920000.022277235
1991	7569999.808445575
1992	8420000.096783046
1993	32949999.043717988
1994	46600001.33886932
1995	13869999.83154238
1996	77650000.2443791
1997	26599999.487400062
1998	24749999.970197678
1999	26260000.4058331
2000	21849999.94002287
2001	2769999.9995529675
2002	11150000.078603579
2003	9840000.35375357
2004	6810000.235214834