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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $520,992,950 | 258,618,789 | 258,618,789 |
| 2006 | $514,625,718 | 254,971,872 | 254,971,872 |
| 2007 | $544,953,795 | 299,051,563 | 299,051,563 |
| 2008 | $394,880,906 | 253,725,781 | 253,725,781 |
| 2009 | $238,079,354 | 210,224,374 | 210,224,374 |
| 2010 | $269,197,309 | 268,115,948 | 268,115,948 |
| 2011 | $237,692,803 | 357,048,919 | 357,048,919 |
Note: Quantity represents Weight in kilograms
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