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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $7,330 | 542 | 542 |
| 2006 | $17,668 | 1,455 | 1,455 |
| 2007 | $20,169 | 1,499 | 1,499 |
| 2008 | $20,290 | 1,473 | 1,473 |
| 2009 | $25,140 | 70,749 | 70,749 |
| 2010 | $30,740 | 2,228 | 2,228 |
| 2011 | $43,229 | 94,074 | 94,074 |
Note: Quantity represents Weight in kilograms
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