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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,677,323,000 | 49,701,293 | 49,701,293 |
| 2006 | $1,941,212,000 | 54,800,577 | 54,800,577 |
| 2007 | $2,493,650,000 | 59,454,685 | 59,454,685 |
| 2008 | $2,993,562,000 | 65,674,829 | 65,674,829 |
| 2009 | $3,148,874,000 | 58,455,102 | 58,455,102 |
| 2010 | $3,429,074,112 | 57,458,264 | 57,458,264 |
| 2011 | $3,924,309,468 | 95,302,472 | 95,302,472 |
Note: Quantity represents Weight in kilograms
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