Year	current US$
1960	24090000.1525879
1961	20229999.5422363
1962	15649999.6185303
1963	11159999.8474121
1964	5239999.771118159
1965	6469999.79019165
1966	1629999.99523163
1967	1409999.9666214
1968	959999.978542328
1969	3740000.00953674
1970	5860000.1335144
1971	5980000.01907349
1972	7300000.19073486
1973	8079999.923706049
1974	21250000
1975	31149999.6185303
1976	56139999.3896484
1977	95010002.1362305
1978	47610000.6103516
1979	29909999.8474121
1980	52680000.3051758
1981	43810001.373291
1982	30879999.1607666
1983	18569999.6948242
1984	16819999.6948242
1985	36860000.6103516
1986	34979999.5422363
1987	41319999.6948242
1988	44209999.0844727
1989	40740001.6784668
1990	38430000.3051758
1991	39759998.3215332
1992	26170000.0762939
1993	33799999.237060495
1994	44029998.779296905
1995	21430000.3051758
1996	22579999.9237061