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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $767,141,617 | 1,331,917 | 1,331,917 |
| 2006 | $642,951,427 | 1,360,732 | 1,360,732 |
| 2007 | $455,621,927 | 921,476 | 921,476 |
| 2008 | $261,867,919 | 702,709 | 702,709 |
| 2009 | $29,225,181 | 502,880 | 502,880 |
| 2010 | $28,938,634 | 537,454 | 537,454 |
| 2011 | $27,710,498 | 494,793 | 494,793 |
Note: Quantity represents Weight in kilograms
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