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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $591,450,000 | 161,987,191 | 161,987,191 |
| 2006 | $718,063,000 | 201,730,524 | 201,730,524 |
| 2007 | $862,001,000 | 225,528,200 | 225,528,200 |
| 2008 | $985,650,000 | 229,141,630 | 229,141,630 |
| 2009 | $793,024,000 | 203,398,347 | 203,398,347 |
| 2010 | $843,098,800 | 229,664,448 | 229,664,448 |
| 2011 | $934,012,053 | 224,521,107 | 224,521,107 |
Note: Quantity represents Weight in kilograms
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