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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $51,004,994 | 763,857 | 763,857 |
| 2006 | $44,767,070 | 624,438 | 624,438 |
| 2007 | $41,382,384 | 521,505 | 521,505 |
| 2008 | $39,984,308 | 570,798 | 570,798 |
| 2009 | $29,291,910 | 438,362 | 438,362 |
| 2010 | $31,922,464 | 500,953 | 500,953 |
| 2011 | $28,985,278 | 365,203 | 365,203 |
Note: Quantity represents Weight in kilograms
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