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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $466,122,874 | 42,317,778 | 42,317,778 |
| 2006 | $409,878,515 | 37,211,536 | 37,211,536 |
| 2007 | $409,443,143 | 36,582,060 | 36,582,060 |
| 2008 | $291,927,947 | 22,162,377 | 22,162,377 |
| 2009 | $189,343,202 | 14,057,406 | 14,057,406 |
| 2010 | $296,346,744 | 23,272,061 | 23,272,061 |
| 2011 | $347,924,171 | 30,100,753 | 30,100,753 |
Note: Quantity represents Weight in kilograms
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