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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $307,433,302 | 403,309,660 | 403,309,660 |
| 2006 | $356,799,647 | 476,886,510 | 476,886,510 |
| 2007 | $361,464,090 | 430,525,183 | 430,525,183 |
| 2008 | $329,683,164 | 316,727,666 | 316,727,666 |
| 2009 | $279,849,041 | 357,684,049 | 357,684,049 |
| 2010 | $285,436,699 | 336,766,843 | 336,766,843 |
| 2011 | $261,981,531 | 225,554,607 | 225,554,607 |
Note: Quantity represents Weight in kilograms
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