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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $227,799,980 | 137,600,471 | 137,600,471 |
| 2006 | $221,007,758 | 115,419,065 | 115,419,065 |
| 2007 | $196,732,211 | 103,953,982 | 103,953,982 |
| 2008 | $229,660,286 | 101,180,426 | 101,180,426 |
| 2009 | $221,638,537 | 88,604,019 | 88,604,019 |
| 2010 | $298,493,932 | 105,797,598 | 105,797,598 |
| 2011 | $341,499,828 | 114,856,416 | 114,856,416 |
Note: Quantity represents Weight in kilograms
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