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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $13,633 | 580 | 580 |
| 2006 | $20,749 | 1,102 | 1,102 |
| 2007 | $21,213 | 1,801 | 1,801 |
| 2008 | $21,888 | 2,231 | 2,231 |
| 2009 | $19,229 | 2,636 | 2,636 |
| 2010 | $11,983 | 901 | 901 |
| 2011 | $15,575 | 4,077 | 4,077 |
Note: Quantity represents Weight in kilograms
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