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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $513,473,952 | 591,703 | 591,703 |
| 2006 | $444,843,939 | 833,347 | 833,347 |
| 2007 | $372,924,044 | 480,710 | 480,710 |
| 2008 | $440,845,133 | 440,099 | 440,099 |
| 2009 | $581,360,865 | 0 | 0 |
| 2010 | $1,014,271,558 | 1,354,073 | 1,354,073 |
Note: Quantity represents Weight in kilograms
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