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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $272,881,000 | 7,961,999 | 7,961,999 |
| 2006 | $420,443,000 | 9,533,547 | 9,533,547 |
| 2007 | $425,412,000 | 5,575,737 | 5,575,737 |
| 2008 | $406,214,000 | 5,469,146 | 5,469,146 |
| 2009 | $288,426,000 | 3,706,055 | 3,706,055 |
| 2010 | $243,811,437 | 4,001,683 | 4,001,683 |
| 2011 | $554,633,570 | 10,105,939 | 10,105,939 |
Note: Quantity represents Weight in kilograms
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