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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $31,129 | 23,538 | 23,538 |
| 2006 | $3,637 | 349 | 349 |
| 2007 | $43,039 | 11,091 | 11,091 |
| 2008 | $146,297 | 247,133 | 247,133 |
| 2009 | $3,165 | 321 | 321 |
| 2010 | $13,528 | 16,194 | 16,194 |
| 2011 | $46,032 | 31,138 | 31,138 |
Note: Quantity represents Weight in kilograms
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