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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $171,113,843 | 314,216,508 | 314,216,508 |
| 2006 | $217,491,190 | 437,393,097 | 437,393,097 |
| 2007 | $260,988,721 | 301,836,533 | 301,836,533 |
| 2008 | $694,944,210 | 594,642,969 | 594,642,969 |
| 2009 | $384,157,705 | 438,854,512 | 438,854,512 |
| 2010 | $300,804,562 | 277,613,220 | 277,613,220 |
| 2011 | $394,344,842 | 289,146,985 | 289,146,985 |
Note: Quantity represents Weight in kilograms
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