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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $397,441,537 | 717,615,247 | 717,615,247 |
| 2006 | $375,917,375 | 592,272,795 | 592,272,795 |
| 2007 | $438,039,489 | 559,780,428 | 559,780,428 |
| 2008 | $675,082,276 | 613,224,429 | 613,224,429 |
| 2009 | $622,616,985 | 583,544,660 | 583,544,660 |
| 2010 | $555,307,928 | 655,614,392 | 655,614,392 |
| 2011 | $563,479,565 | 559,544,142 | 559,544,142 |
Note: Quantity represents Weight in kilograms
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