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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $196,989,000 | 186,696,900 | 186,696,900 |
| 2006 | $163,170,000 | 154,767,700 | 154,767,700 |
| 2007 | $228,133,000 | 194,066,300 | 194,066,300 |
| 2008 | $262,879,000 | 226,299,100 | 226,299,100 |
| 2009 | $165,308,000 | 126,171,600 | 126,171,600 |
| 2010 | $188,850,922 | 167,367,000 | 167,367,000 |
| 2011 | $207,713,787 | 155,438,912 | 155,438,912 |
Note: Quantity represents Weight in kilograms
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