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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $170,986,000 | 509,685,500 | 509,685,500 |
| 2006 | $115,555,000 | 352,397,100 | 352,397,100 |
| 2007 | $209,452,000 | 454,191,600 | 454,191,600 |
| 2008 | $322,437,000 | 538,261,700 | 538,261,700 |
| 2009 | $300,506,000 | 719,899,600 | 719,899,600 |
| 2010 | $266,633,000 | 583,860,800 | 583,860,800 |
| 2011 | $278,003,000 | 394,043,800 | 394,043,800 |
Note: Quantity represents Weight in kilograms
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