Year	current US$
1960	5000000
1961	6010000.228881841
1962	8020000.45776367
1963	17010000.2288818
1964	11079999.923706101
1965	18209999.084472697
1966	18079999.9237061
1967	20219999.3133545
1968	29909999.8474121
1969	46110000.6103516
1970	48189998.626709
1971	53259998.3215332
1972	57209999.0844727
1973	65610000.61035161
1974	75279998.7792969
1975	81330001.8310547
1976	89569999.6948242
1977	91610000.6103516
1978	101209999.084473
1979	111669998.168945
1980	109139999.38964799
1981	136289993.28613302
1982	161839996.33789098
1983	133860000.610352
1984	185229995.727539
1985	158979995.727539
1986	232059997.55859402
1987	185279998.779297
1988	152210006.71386698
1989	158750000
1990	62540000.9155273
1991	28059999.4659424
1992	7389999.8664856
1993	88949996.9482422
1994	2299999.95231628
1995	-699999.988079071
1996	-1570000.05245209
1997	689999.997615814
1998	200000.00298023198
1999	119999.997317791