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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $705,255,936 | 317,927,062 | 317,927,062 |
| 2006 | $687,078,736 | 320,455,728 | 320,455,728 |
| 2007 | $798,176,387 | 383,332,017 | 383,332,017 |
| 2008 | $632,288,638 | 244,746,432 | 244,746,432 |
| 2009 | $442,797,292 | 237,959,397 | 237,959,397 |
| 2010 | $524,639,967 | 271,809,541 | 271,809,541 |
| 2011 | $687,247,548 | 294,529,030 | 294,529,030 |
Note: Quantity represents Weight in kilograms
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