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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $187,471,236 | 170,770,389 | 170,770,389 |
| 2006 | $188,211,133 | 83,822,612 | 83,822,612 |
| 2007 | $153,133,279 | 34,657,930 | 34,657,930 |
| 2008 | $688,204,621 | 248,232,441 | 248,232,441 |
| 2009 | $305,536,080 | 166,083,617 | 166,083,617 |
| 2010 | $472,527,020 | 194,759,628 | 194,759,628 |
| 2011 | $479,754,988 | 180,277,582 | 180,277,582 |
Note: Quantity represents Weight in kilograms
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