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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $254,312,977 | 524,570,244 | 524,570,244 |
| 2006 | $248,251,215 | 543,952,463 | 543,952,463 |
| 2007 | $373,068,211 | 642,624,211 | 642,624,211 |
| 2008 | $460,656,202 | 589,276,909 | 589,276,909 |
| 2009 | $101,677,580 | 237,187,002 | 237,187,002 |
| 2010 | $245,246,218 | 448,672,802 | 448,672,802 |
| 2011 | $350,187,607 | 499,757,823 | 499,757,823 |
Note: Quantity represents Weight in kilograms
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