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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,562 | 534 | 534 |
| 2006 | $1,001 | 407 | 407 |
| 2007 | $5,322 | 2,081 | 2,081 |
| 2008 | $96,987 | 61,547 | 61,547 |
| 2009 | $41,410 | 44,618 | 44,618 |
| 2010 | $106,931 | 99,479 | 99,479 |
| 2011 | $258,769 | 217,772 | 217,772 |
Note: Quantity represents Weight in kilograms
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