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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,858,761,454 | 14,252,179 | 14,252,179 |
| 2006 | $2,145,924,321 | 15,622,496 | 15,622,496 |
| 2007 | $13,858,569,833 | 42,773,609 | 42,773,609 |
| 2008 | $13,574,506,422 | 50,054,199 | 50,054,199 |
| 2009 | $13,905,328,101 | 46,693,583 | 46,693,583 |
| 2010 | $16,880,878,448 | 54,840,650 | 54,840,650 |
| 2011 | $24,244,717,009 | 64,044,679 | 64,044,679 |
Note: Quantity represents Weight in kilograms
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