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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $356,820,508 | 4,746,966,973 | 4,746,966,973 |
| 2006 | $390,537,585 | 5,130,486,266 | 5,130,486,266 |
| 2007 | $183,774,327 | 1,995,905,892 | 1,995,905,892 |
| 2008 | $364,245,504 | 2,836,444,166 | 2,836,444,166 |
| 2009 | $501,774,095 | 5,341,937,438 | 5,341,937,438 |
| 2010 | $955,415,795 | 6,551,804,936 | 6,551,804,936 |
| 2011 | $1,404,206,151 | 7,415,753,984 | 7,415,753,984 |
Note: Quantity represents Weight in kilograms
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