Year	current US$
1960	5000000
1961	6000000
1962	8000000
1963	17000000
1964	11000000
1965	18159999.8474121
1966	17959999.084472697
1967	20100000.3814697
1968	29909999.8474121
1969	46000000
1970	48000000
1971	53000000
1972	57000000
1973	65200000.04768372
1974	75059999.94277954
1975	81059999.94277954
1976	89099999.99962747
1977	91089999.99985099
1978	100570000.02078712
1979	111059999.9986589
1980	108509999.99418855
1981	135980000.04701316
1982	161360000.20988286
1983	132609999.96960163
1984	184649999.96870756
1985	158170000.0166893
1986	230779999.95648858
1987	184360000.02920628
1988	151499999.97764826
1989	157909999.92191792
1990	61869999.90977347
1991	26490000.46402219
1992	7220000.157132746
1993	88509999.82655048
1994	2079999.9330192828
1995	-200000.00298023198
1996	-1620000.00476837
1998	9999.99977648258
2000	9999.99977648258