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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,926,133,700 | 29,676,239 | 29,676,239 |
| 2006 | $2,185,283,658 | 28,734,763 | 28,734,763 |
| 2007 | $2,715,783,033 | 35,784,874 | 35,784,874 |
| 2008 | $3,091,046,564 | 37,987,314 | 37,987,314 |
| 2009 | $2,853,664,573 | 39,527,581 | 39,527,581 |
| 2010 | $2,602,404,726 | 39,972,081 | 39,972,081 |
Note: Quantity represents Weight in kilograms
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