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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $522,959,539 | 137,102 | 137,102 |
| 2006 | $461,628,629 | 143,326 | 143,326 |
| 2007 | $509,578,812 | 168,044 | 168,044 |
| 2008 | $517,913,617 | 145,108 | 145,108 |
| 2009 | $593,521,561 | 124,439 | 124,439 |
| 2010 | $715,868,249 | 144,208 | 144,208 |
| 2011 | $856,892,426 | 261,802 | 261,802 |
Note: Quantity represents Weight in kilograms
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