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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $424,654,898 | 1,660,054,426 | 1,660,054,426 |
| 2006 | $451,142,872 | 1,834,051,040 | 1,834,051,040 |
| 2007 | $624,201,714 | 2,097,152,068 | 2,097,152,068 |
| 2008 | $972,988,184 | 2,215,116,573 | 2,215,116,573 |
| 2009 | $808,786,696 | 1,895,411,069 | 1,895,411,069 |
| 2010 | $954,997,654 | 2,289,130,625 | 2,289,130,625 |
| 2011 | $816,985,918 | 1,909,586,937 | 1,909,586,937 |
Note: Quantity represents Weight in kilograms
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