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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $602,836,462 | 77,999,337 | 77,999,337 |
| 2006 | $564,082,655 | 72,791,879 | 72,791,879 |
| 2007 | $525,281,216 | 80,710,367 | 80,710,367 |
| 2008 | $437,639,445 | 66,724,272 | 66,724,272 |
| 2009 | $284,273,354 | 45,436,445 | 45,436,445 |
| 2010 | $263,224,382 | 41,575,460 | 41,575,460 |
| 2011 | $347,655,817 | 64,063,668 | 64,063,668 |
Note: Quantity represents Weight in kilograms
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