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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,700 | 947 | 947 |
| 2006 | $842 | 2,886 | 2,886 |
| 2007 | $285 | 1,146 | 1,146 |
| 2008 | $9,930 | 35,493 | 35,493 |
| 2009 | $19,865 | 83,382 | 83,382 |
| 2010 | $16,537 | 82,917 | 82,917 |
| 2011 | $30,424 | 117,263 | 117,263 |
Note: Quantity represents Weight in kilograms
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