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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $300,120,000 | 295,608 | 295,608 |
| 2006 | $653,572,000 | 466,833 | 466,833 |
| 2007 | $964,618,000 | 411,235 | 411,235 |
| 2008 | $1,004,343,000 | 473,278 | 473,278 |
| 2009 | $1,201,867,000 | 671,902 | 671,902 |
| 2010 | $726,713,315 | 392,829 | 392,829 |
| 2011 | $1,083,894,409 | 489,149 | 489,149 |
Note: Quantity represents Weight in kilograms
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