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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $647,551,000 | 312,927,350 | 312,927,350 |
| 2006 | $605,221,000 | 293,611,826 | 293,611,826 |
| 2007 | $751,186,000 | 309,432,595 | 309,432,595 |
| 2008 | $773,444,000 | 284,956,005 | 284,956,005 |
| 2009 | $682,678,000 | 216,586,342 | 216,586,342 |
| 2010 | $567,856,429 | 210,857,592 | 210,857,592 |
| 2011 | $457,297,608 | 174,223,053 | 174,223,053 |
Note: Quantity represents Weight in kilograms
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