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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $391,841,855 | 1,046,849,214 | 1,046,849,214 |
| 2006 | $226,309,892 | 625,812,513 | 625,812,513 |
| 2007 | $149,937,030 | 329,278,758 | 329,278,758 |
| 2008 | $255,035,576 | 299,591,970 | 299,591,970 |
| 2009 | $71,271,979 | 165,936,133 | 165,936,133 |
| 2010 | $118,020,566 | 226,930,706 | 226,930,706 |
| 2011 | $90,646,003 | 212,447,824 | 212,447,824 |
Note: Quantity represents Weight in kilograms
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