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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $29,990,618 | 298,654,866 | 298,654,866 |
| 2006 | $25,339,504 | 392,246,849 | 392,246,849 |
| 2007 | $36,243,909 | 4,750,794,955 | 4,750,794,955 |
| 2008 | $42,519,473 | 655,189,391 | 655,189,391 |
Note: Quantity represents Weight in kilograms
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