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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $163,437,492 | 428,646,336 | 428,646,336 |
| 2006 | $130,220,415 | 307,390,564 | 307,390,564 |
| 2007 | $162,943,394 | 312,457,875 | 312,457,875 |
| 2008 | $245,019,299 | 405,610,792 | 405,610,792 |
| 2009 | $433,379,108 | 592,546,813 | 592,546,813 |
| 2010 | $293,771,351 | 351,932,772 | 351,932,772 |
| 2011 | $324,768,721 | 479,382,808 | 479,382,808 |
Note: Quantity represents Weight in kilograms
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