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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $134,571,000 | 2,671,780,478 | 2,671,780,478 |
| 2006 | $151,858,000 | 2,691,532,600 | 2,691,532,600 |
| 2007 | $149,162,000 | 2,476,837,230 | 2,476,837,230 |
| 2008 | $157,659,000 | 2,319,331,544 | 2,319,331,544 |
| 2009 | $131,559,000 | 1,867,035,592 | 1,867,035,592 |
| 2010 | $176,252,823 | 2,654,735,700 | 2,654,735,700 |
| 2011 | $265,104,424 | 3,476,612,039 | 3,476,612,039 |
Note: Quantity represents Weight in kilograms
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