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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $572,136,186 | 1,348,490,063 | 1,348,490,063 |
| 2006 | $650,009,055 | 1,398,902,200 | 1,398,902,200 |
| 2007 | $795,496,693 | 1,443,805,416 | 1,443,805,416 |
| 2008 | $1,083,794,454 | 1,532,263,441 | 1,532,263,441 |
| 2009 | $629,975,542 | 1,395,794,252 | 1,395,794,252 |
| 2010 | $617,613,209 | 1,163,107,389 | 1,163,107,389 |
| 2011 | $786,494,972 | 1,199,454,700 | 1,199,454,700 |
Note: Quantity represents Weight in kilograms
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