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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $517,465,946 | 439,565,386 | 439,565,386 |
| 2006 | $538,347,610 | 429,516,222 | 429,516,222 |
| 2007 | $606,276,933 | 452,780,296 | 452,780,296 |
| 2008 | $643,138,073 | 436,036,358 | 436,036,358 |
| 2009 | $388,638,554 | 427,654,329 | 427,654,329 |
| 2010 | $669,081,230 | 557,285,221 | 557,285,221 |
| 2011 | $675,551,752 | 473,899,046 | 473,899,046 |
Note: Quantity represents Weight in kilograms
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