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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $71 | 49 | 49 |
| 2006 | $9,136 | 4,182 | 4,182 |
| 2007 | $10,363 | 4,139 | 4,139 |
| 2008 | $9,867 | 5,178 | 5,178 |
| 2009 | $39,004 | 14,959 | 14,959 |
| 2010 | $34,555 | 13,288 | 13,288 |
| 2011 | $23,141 | 7,232 | 7,232 |
Note: Quantity represents Weight in kilograms
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