Year	US Dollars
1960	0.24892
1961	5.62975
1962	7.78731
1963	3.55771
1964	3.10847
1965	4.5593
1966	48.78931
1967	0.244
1968	0.94876
1969	0.64607
1970	4.26861
1971	20.34702
1972	11.68037
1973	55.48801
1974	139.26917
1975	90.69993
1976	543.78692
1977	152.09125
1978	253.72304
1979	390.22545
1980	569.58866
1981	522.37502
1982	398.95964
1983	630.79957
1984	503.84407
1985	170.49784
1986	221.03706
1987	18.94699
1988	-5.39996
1989	-3.51754
1990	265.74259
1991	176.87214
1992	144.48032
1993	194.21182
1994	161.46541
1995	162.93761
1996	209.11695
1997	230.26371
1998	296.98848
1999	89.40478
2000	84.94016
2001	96.96586
2002	82.29056
2003	169.31447
2004	69.85414