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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $313,139,000 | 275,231,379 | 275,231,379 |
| 2006 | $406,015,000 | 429,446,000 | 429,446,000 |
| 2007 | $454,107,000 | 421,128,800 | 421,128,800 |
| 2008 | $531,223,000 | 439,443,827 | 439,443,827 |
| 2009 | $440,711,000 | 391,424,000 | 391,424,000 |
| 2010 | $381,159,581 | 384,755,800 | 384,755,800 |
| 2011 | $395,789,753 | 372,531,815 | 372,531,815 |
Note: Quantity represents Weight in kilograms
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