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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,434 | 93 | 93 |
| 2006 | $1,995 | 130 | 130 |
| 2007 | $4,363 | 23,143 | 23,143 |
| 2008 | $5,029 | 23,000 | 23,000 |
| 2009 | $5,451 | 14,710 | 14,710 |
| 2010 | $8,175 | 3,608 | 3,608 |
| 2011 | $12,536 | 19,402 | 19,402 |
Note: Quantity represents Weight in kilograms
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