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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,387,919,629 | 747,356,630 | 747,356,630 |
| 2006 | $1,358,691,669 | 647,187,375 | 647,187,375 |
| 2007 | $948,434,744 | 423,849,510 | 423,849,510 |
| 2008 | $761,110,300 | 329,722,028 | 329,722,028 |
| 2009 | $591,999,600 | 363,637,090 | 363,637,090 |
| 2010 | $885,229,810 | 443,762,905 | 443,762,905 |
| 2011 | $1,021,856,159 | 457,685,931 | 457,685,931 |
Note: Quantity represents Weight in kilograms
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