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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $15,973,875 | 48,212,348 | 48,212,348 |
| 2006 | $14,194,216 | 89,711,489 | 89,711,489 |
| 2007 | $12,037,043 | 88,472,422 | 88,472,422 |
| 2008 | $10,619,371 | 64,885,445 | 64,885,445 |
| 2009 | $7,196,699 | 60,174,914 | 60,174,914 |
| 2010 | $9,709,740 | 77,749,678 | 77,749,678 |
| 2011 | $6,178,704 | 51,772,742 | 51,772,742 |
Note: Quantity represents Weight in kilograms
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