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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $404,764,589 | 58,409,691 | 58,409,691 |
| 2006 | $479,385,531 | 75,000,331 | 75,000,331 |
| 2007 | $500,623,474 | 81,979,521 | 81,979,521 |
| 2008 | $486,732,150 | 0 | 0 |
| 2009 | $416,574,732 | 64,965,515 | 64,965,515 |
| 2010 | $458,492,786 | 72,808,888 | 72,808,888 |
| 2011 | $462,411,021 | 71,927,212 | 71,927,212 |
Note: Quantity represents Weight in kilograms
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