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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,640,034,616 | 111,417 | 111,417 |
| 2006 | $3,009,195,568 | 107,163 | 107,163 |
| 2007 | $3,564,292,682 | 114,456 | 114,456 |
| 2008 | $3,859,781,684 | 91,072 | 91,072 |
| 2009 | $2,894,434,866 | 66,425 | 66,425 |
| 2010 | $3,493,506,143 | 68,389 | 68,389 |
| 2011 | $4,858,830,138 | 55,510 | 55,510 |
Note: Quantity represents Weight in kilograms
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