Year	current US$
1960	12329999.923706101
1961	9770000.45776367
1962	8840000.15258789
1963	17239999.7711182
1964	19600000.3814697
1965	16540000.9155273
1966	17440000.5340576
1967	16120000.839233398
1968	16850000.3814697
1969	15050000.1907349
1970	19559999.4659424
1971	16040000.9155273
1972	15039999.961853001
1973	27489999.7711182
1974	21530000.6866455
1975	33650001.5258789
1976	30319999.6948242
1977	31170000.0762939
1978	39529998.779296905
1979	51799999.237060495
1980	15930000.3051758
1981	49369998.9318848
1982	25079999.9237061
1983	44029998.779296905
1984	11409999.8474121
1985	18329999.9237061
1986	6829999.92370605
1987	-1429999.94754791
1988	-2829999.92370605
1989	-5210000.03814697
1990	5309999.94277954
1991	21799999.237060502
1992	4630000.11444092
1993	30870000.8392334
1994	42490001.6784668
1995	9210000.03814697
1996	72169998.1689453
1997	22389999.3896484
1998	21870000.8392334
1999	25100000.3814697
2000	21239999.7711182
2001	1700000.04768372
2002	11039999.961853001
2003	9109999.65667725
2004	6190000.05722046