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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $14,366,113 | 1,455,813,328 | 1,455,813,328 |
| 2006 | $11,840,042 | 1,196,860,396 | 1,196,860,396 |
| 2007 | $11,452,756 | 1,180,236,821 | 1,180,236,821 |
| 2008 | $9,070,307 | 896,207,717 | 896,207,717 |
| 2009 | $6,832,199 | 638,328,367 | 638,328,367 |
| 2010 | $6,385,160 | 570,772,854 | 570,772,854 |
| 2011 | $8,442,530 | 770,438,285 | 770,438,285 |
Note: Quantity represents Weight in kilograms
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