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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $296,171,060 | 227,334,253 | 227,334,253 |
| 2006 | $414,480,238 | 297,475,000 | 297,475,000 |
| 2007 | $439,566,615 | 277,835,341 | 277,835,341 |
| 2008 | $452,394,840 | 250,730,872 | 250,730,872 |
| 2009 | $291,380,080 | 222,352,011 | 222,352,011 |
| 2010 | $364,419,953 | 229,888,946 | 229,888,946 |
| 2011 | $493,892,747 | 261,362,693 | 261,362,693 |
Note: Quantity represents Weight in kilograms
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