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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $267,315,000 | 3,316 | 3,316 |
| 2006 | $536,985,000 | 15,647 | 15,647 |
| 2007 | $647,342,000 | 2,210 | 2,210 |
| 2008 | $687,277,000 | 2,490 | 2,490 |
| 2009 | $170,347,000 | 2,867 | 2,867 |
| 2010 | $264,852,272 | 3,254 | 3,254 |
| 2011 | $260,956,735 | 3,802 | 3,802 |
Note: Quantity represents Weight in kilograms
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