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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $12,626,176 | 864,824,639 | 864,824,639 |
| 2006 | $15,660,328 | 1,049,804,562 | 1,049,804,562 |
| 2007 | $16,289,185 | 916,694,355 | 916,694,355 |
| 2008 | $17,291,240 | 1,023,769,104 | 1,023,769,104 |
| 2009 | $12,301,491 | 699,168,405 | 699,168,405 |
| 2010 | $16,730,584 | 1,082,613,560 | 1,082,613,560 |
| 2011 | $17,739,525 | 872,262,610 | 872,262,610 |
Note: Quantity represents Weight in kilograms
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