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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $24,147,000 | 504,968,500 | 504,968,500 |
| 2006 | $19,649,000 | 372,218,300 | 372,218,300 |
| 2007 | $10,406,000 | 141,099,800 | 141,099,800 |
| 2008 | $4,492,000 | 52,442,300 | 52,442,300 |
| 2009 | $3,782,000 | 47,136,300 | 47,136,300 |
| 2010 | $2,606,000 | 32,011,700 | 32,011,700 |
| 2011 | $2,645,000 | 31,373,000 | 31,373,000 |
Note: Quantity represents Weight in kilograms
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