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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $441,468,325 | 411,081,745 | 411,081,745 |
| 2006 | $424,005,193 | 340,911,922 | 340,911,922 |
| 2007 | $362,557,932 | 267,154,499 | 267,154,499 |
| 2008 | $376,482,736 | 249,749,661 | 249,749,661 |
| 2009 | $272,274,315 | 242,980,470 | 242,980,470 |
| 2010 | $509,376,284 | 382,283,721 | 382,283,721 |
| 2011 | $842,179,988 | 529,423,373 | 529,423,373 |
Note: Quantity represents Weight in kilograms
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