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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $184,488,824 | 592,492,208 | 592,492,208 |
| 2006 | $100,250,581 | 320,274,334 | 320,274,334 |
| 2007 | $178,392,498 | 480,953,096 | 480,953,096 |
| 2008 | $53,196,785 | 83,479,920 | 83,479,920 |
| 2009 | $23,644,271 | 66,333,141 | 66,333,141 |
| 2010 | $66,441 | 50,449 | 50,449 |
| 2011 | $39,034,264 | 69,558,360 | 69,558,360 |
Note: Quantity represents Weight in kilograms
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