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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $933,234,000 | 382,366,839 | 382,366,839 |
| 2006 | $1,044,064,000 | 403,934,121 | 403,934,121 |
| 2007 | $1,202,346,000 | 428,833,453 | 428,833,453 |
| 2008 | $1,324,513,000 | 430,596,125 | 430,596,125 |
| 2009 | $1,241,413,000 | 432,555,236 | 432,555,236 |
| 2010 | $1,259,327,648 | 476,255,201 | 476,255,201 |
| 2011 | $1,450,491,903 | 525,392,508 | 525,392,508 |
Note: Quantity represents Weight in kilograms
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