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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,127,652,853 | 59,760,319 | 59,760,319 |
| 2006 | $4,118,376,262 | 60,578,780 | 60,578,780 |
| 2007 | $2,516,482,424 | 34,656,112 | 34,656,112 |
| 2008 | $2,321,393,770 | 30,407,519 | 30,407,519 |
| 2009 | $1,699,028,454 | 24,543,990 | 24,543,990 |
| 2010 | $1,713,959,069 | 20,993,929 | 20,993,929 |
| 2011 | $1,610,022,724 | 19,154,523 | 19,154,523 |
Note: Quantity represents Weight in kilograms
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