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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $266,997,676 | 2,793,070,778 | 2,793,070,778 |
| 2006 | $175,441,452 | 1,680,706,150 | 1,680,706,150 |
| 2007 | $168,774,041 | 947,109,487 | 947,109,487 |
| 2008 | $659,688,005 | 2,804,065,883 | 2,804,065,883 |
| 2009 | $999,103,678 | 7,171,575,779 | 7,171,575,779 |
| 2010 | $773,644,932 | 4,045,072,200 | 4,045,072,200 |
| 2011 | $1,963,838,071 | 7,795,942,747 | 7,795,942,747 |
Note: Quantity represents Weight in kilograms
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