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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,296,440,000 | 1,853,137,400 | 1,853,137,400 |
| 2006 | $1,628,894,000 | 2,251,364,000 | 2,251,364,000 |
| 2007 | $2,150,757,000 | 2,417,544,400 | 2,417,544,400 |
| 2008 | $2,318,471,000 | 2,294,705,379 | 2,294,705,379 |
| 2009 | $1,563,429,000 | 1,747,387,300 | 1,747,387,300 |
| 2010 | $1,893,294,619 | 2,184,757,300 | 2,184,757,300 |
| 2011 | $2,439,708,033 | 2,442,987,712 | 2,442,987,712 |
Note: Quantity represents Weight in kilograms
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