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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $459,614,000 | 167,796,700 | 167,796,700 |
| 2006 | $490,861,000 | 165,519,600 | 165,519,600 |
| 2007 | $514,448,000 | 160,000,100 | 160,000,100 |
| 2008 | $571,113,000 | 158,321,300 | 158,321,300 |
| 2009 | $383,616,000 | 75,641,397 | 75,641,397 |
| 2010 | $370,994,053 | 75,098,800 | 75,098,800 |
| 2011 | $409,676,479 | 76,513,554 | 76,513,554 |
Note: Quantity represents Weight in kilograms
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