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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $19,798 | 167,644 | 167,644 |
| 2006 | $19 | 5 | 5 |
| 2007 | $10,423 | 1,723,644 | 1,723,644 |
| 2008 | $85,659 | 17,176,945 | 17,176,945 |
| 2009 | $163,010 | 30,076,552 | 30,076,552 |
| 2010 | $418,942 | 24,951,987 | 24,951,987 |
| 2011 | $233,253 | 5,624,562 | 5,624,562 |
Note: Quantity represents Weight in kilograms
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