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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $283,547,000 | 243,141,300 | 243,141,300 |
| 2006 | $288,734,000 | 238,221,300 | 238,221,300 |
| 2007 | $398,225,000 | 256,045,200 | 256,045,200 |
| 2008 | $442,802,000 | 282,592,638 | 282,592,638 |
| 2009 | $324,090,000 | 248,057,500 | 248,057,500 |
| 2010 | $351,680,611 | 264,383,000 | 264,383,000 |
| 2011 | $388,246,970 | 256,406,995 | 256,406,995 |
Note: Quantity represents Weight in kilograms
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