Date | Quantity (Ounces) | Quantity (tons) | Variation n-1 |
1/1/2002
|
141,463.29
|
4.40
|
-29.03%
|
1/1/2001
|
199,334.63
|
6.20
|
-57.24%
|
1/1/2000
|
466,185.83
|
14.50
|
-36.40%
|
1/1/1999
|
733,037.02
|
22.80
|
18.13%
|
1/1/1998
|
620,509.41
|
19.30
|
-19.25%
|
1/1/1997
|
768,402.84
|
23.90
|
20.71%
|
1/1/1996
|
636,584.78
|
19.80
|
-15.74%
|
1/1/1995
|
755,542.55
|
23.50
|
60.96%
|
1/1/1994
|
469,400.90
|
14.60
|
-6.41%
|
1/1/1993
|
501,551.65
|
15.60
|
-8.24%
|
1/1/1992
|
546,562.69
|
17.00
|
32.81%
|
1/1/1991
|
411,529.56
|
12.80
|
8.47%
|
1/1/1990
|
379,378.81
|
11.80
|
-15.11%
|
1/1/1989
|
446,895.38
|
13.90
|
13.01%
|
1/1/1988
|
395,454.18
|
12.30
|
-6.11%
|
1/1/1987
|
421,174.78
|
13.10
|
-21.56%
|
1/1/1986
|
536,917.47
|
16.70
|
-30.42%
|
1/1/1985
|
771,617.92
|
24.00
|
11.11%
|
1/1/1984
|
694,456.13
|
21.60
|
17.39%
|
1/1/1983
|
591,573.74
|
18.40
|
49.59%
|
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