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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $299,980,000 | 19,191,956 | 19,191,956 |
| 2006 | $420,104,000 | 27,704,494 | 27,704,494 |
| 2007 | $660,582,000 | 39,751,282 | 39,751,282 |
| 2008 | $1,026,823,000 | 52,676,038 | 52,676,038 |
| 2009 | $522,990,000 | 28,671,910 | 28,671,910 |
| 2010 | $406,652,901 | 24,420,998 | 24,420,998 |
| 2011 | $449,007,938 | 21,902,167 | 21,902,167 |
Note: Quantity represents Weight in kilograms
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