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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $429,827,951 | 0 | 7,374,935,507 |
| 2006 | $533,600,416 | 0 | 8,260,723,476 |
| 2007 | $687,994,187 | 23,669,784 | 9,655,668,590 |
| 2008 | $794,874,443 | 25,841,593 | 9,345,219,072 |
| 2009 | $591,320,661 | 17,475,638 | 7,389,946,911 |
| 2010 | $745,650,988 | 23,350,110 | 8,909,493,558 |
| 2011 | $814,691,825 | 29,346,678 | 8,780,299,641 |
Note: Quantity represents Number of items
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