Year	US Dollars
1960	54810001.37329
1961	-2589999.91417
1962	-68629997.25342
1963	-17079999.92371
1964	-2990000.00954
1965	2630000.11444
1966	2349999.90463
1967	3140000.1049
1968	3190000.05722
1969	8779999.73297
1970	9350000.38147
1971	11500000
1972	12090000.15259
1973	12840000.15259
1974	15279999.73297
1975	11470000.26703
1976	6559999.94278
1977	22040000.91553
1978	17000000
1979	26090000.15259
1980	29280000.68665
1981	61950000.76294
1982	115239997.86377
1983	99750000
1984	84339996.33789
1985	67879997.25342
1986	55509998.32153
1987	36580001.83105
1988	28069999.69482
1989	21280000.68665
1990	20040000.91553
1991	18139999.38965
1992	55099998.47412
1993	33349998.47412
1994	18450000.76294
1995	16899999.61853
1996	14239999.77112
1997	3559999.94278
1998	20260000.22888
1999	25049999.23706
2000	24629999.16077
2001	16969999.31335
2002	21569999.69482
2003	16469999.31335
2004	20180000.30518
2005	23610000.61035
2006	22409999.84741
2007	-151350006.10352