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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $717,905,483 | 110,256,454 | 110,256,454 |
| 2006 | $1,016,947,069 | 161,375,052 | 161,375,052 |
| 2007 | $2,090,720,804 | 359,457,431 | 359,457,431 |
| 2008 | $2,164,843,642 | 260,263,374 | 260,263,374 |
| 2009 | $1,488,996,359 | 196,907,843 | 196,907,843 |
| 2010 | $2,063,805,686 | 284,171,217 | 284,171,217 |
| 2011 | $2,500,196,002 | 337,655,953 | 337,655,953 |
Note: Quantity represents Weight in kilograms
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