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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $897,342,000 | 296,200,683 | 296,200,683 |
| 2006 | $1,111,498,000 | 348,369,105 | 348,369,105 |
| 2007 | $1,440,756,000 | 392,429,222 | 392,429,222 |
| 2008 | $1,621,985,000 | 426,765,374 | 426,765,374 |
| 2009 | $1,041,486,000 | 248,367,993 | 248,367,993 |
| 2010 | $1,357,359,379 | 355,004,112 | 355,004,112 |
| 2011 | $1,848,840,683 | 448,217,233 | 448,217,233 |
Note: Quantity represents Weight in kilograms
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