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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $17,569 | 14,680 | 14,680 |
| 2006 | $54,221 | 46,592 | 46,592 |
| 2007 | $39,130 | 21,798 | 21,798 |
| 2008 | $67,754 | 36,726 | 36,726 |
| 2009 | $49,534 | 18,784 | 18,784 |
| 2010 | $46,620 | 20,411 | 20,411 |
| 2011 | $66,956 | 36,586 | 36,586 |
Note: Quantity represents Weight in kilograms
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