Year	US Dollars
1960	-55258325.19997
1961	-45217459.0642
1962	-6992601.51758
1963	-20925340.67982
1964	-33482775.45425
1965	1043.1759
1966	-71571329.96877
1967	-53751833.66401
1968	-55309460.34818
1969	-102820349.37543
1970	-76761440.50555
1971	-130731766.89864
1972	-172086536.61144
1973	-120868893.1785
1974	-505304444.7681
1975	-870748437.14857
1976	-1145686695.28724
1977	-1761593623.0199
1978	-1545919513.39496
1979	-1703393396.49023
1980	-2286193276.18196
1981	-2735615268.34416
1982	-1825028708.59839
1983	-2400941333.1282
1984	-2060936900.3903
1985	-2105008197.06924
1986	-1485030556.51097
1987	-1532620767.88789
1988	-990228901.45802
1989	-480714694.96433
1990	47798166.81042
1991	-995541666.66667
1992	-1507596241.5482
1993	-1785766356.93165
1994	-1248100000
1995	-786047904.19162
1996	-863532934.13174
1997	-200389105.05837
1998	-55711538.46154
1999	51608527.13178
2000	1315616495.7086
2001	1296177020.56929
2002	1625172834.48556
2003	1070006096.32189
2004	60831683.16832
2005	-356929750.95785
2006	260418514.174
2007	327447947.53704