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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,111,891,000 | 19,383,300 | 19,383,300 |
| 2006 | $1,445,699,000 | 15,733,287 | 15,733,287 |
| 2007 | $1,528,261,000 | 24,220,316 | 24,220,316 |
| 2008 | $2,148,159,000 | 23,552,753 | 23,552,753 |
| 2009 | $1,867,140,000 | 22,381,988 | 22,381,988 |
| 2010 | $2,103,728,000 | 27,952,246 | 27,952,246 |
| 2011 | $2,387,604,000 | 29,771,423 | 29,771,423 |
Note: Quantity represents Weight in kilograms
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