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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,300 | 16,000 | 16,000 |
| 2006 | $1,305 | 5,009 | 5,009 |
| 2007 | $980 | 7 | 7 |
| 2008 | $13,922 | 82,243 | 82,243 |
| 2009 | $32,491 | 207,387 | 207,387 |
| 2010 | $33,888 | 271,502 | 271,502 |
| 2011 | $22,939 | 114,480 | 114,480 |
Note: Quantity represents Weight in kilograms
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