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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $554,451,489 | 275,976,973 | 275,976,973 |
| 2006 | $669,516,266 | 304,997,513 | 304,997,513 |
| 2007 | $752,229,950 | 325,739,734 | 325,739,734 |
| 2008 | $811,393,609 | 308,263,294 | 308,263,294 |
| 2009 | $758,019,988 | 272,334,526 | 272,334,526 |
| 2010 | $1,068,777,492 | 355,750,695 | 355,750,695 |
| 2011 | $1,189,020,416 | 368,303,786 | 368,303,786 |
Note: Quantity represents Weight in kilograms
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