Year	US Dollars
1960	5000000
1961	8939999.58038
1962	4250000
1963	-100000.00149
1964	4010000.22888
1965	9460000.03815
1966	15029999.73297
1967	22680000.30518
1968	8060000.41962
1969	11960000.03815
1970	20889999.38965
1971	27260000.22888
1972	27200000.76294
1973	38029998.7793
1974	36310001.37329
1975	13920000.07629
1976	14460000.03815
1977	19729999.54224
1978	12729999.54224
1979	18629999.16077
1980	24129999.16077
1981	16530000.68665
1982	7400000.09537
1983	8779999.73297
1984	30629999.16077
1985	79800003.05176
1986	48139999.38965
1987	28610000.61035
1988	27559999.46594
1989	769999.98093
1990	819999.99285
1991	3539999.96185
1992	4199999.80927
1993	-19999.99955
1994	829999.98331
1995	280000.00119
1996	-340000.00358
1997	479999.98927
1998	280000.00119
1999	39999.99911