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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $81,637,000 | 2,400,069,900 | 2,400,069,900 |
| 2006 | $95,551,000 | 2,630,324,500 | 2,630,324,500 |
| 2007 | $112,150,000 | 2,499,882,600 | 2,499,882,600 |
| 2008 | $120,103,000 | 2,504,238,600 | 2,504,238,600 |
| 2009 | $95,909,000 | 2,180,516,835 | 2,180,516,835 |
| 2010 | $102,429,085 | 2,203,702,607 | 2,203,702,607 |
| 2011 | $113,968,279 | 2,316,914,368 | 2,316,914,368 |
Note: Quantity represents Weight in kilograms
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