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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $298,993,566 | 444,949,585 | 444,949,585 |
| 2006 | $308,166,216 | 350,696,704 | 350,696,704 |
| 2007 | $241,853,610 | 176,170,204 | 176,170,204 |
| 2008 | $672,446,307 | 714,708,966 | 714,708,966 |
| 2009 | $489,989,691 | 346,111,458 | 346,111,458 |
| 2010 | $531,796,406 | 511,966,973 | 511,966,973 |
Note: Quantity represents Weight in kilograms
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