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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,100,749,466 | 333,464,807 | 333,464,807 |
| 2006 | $1,160,681,669 | 349,919,698 | 349,919,698 |
| 2007 | $1,190,654,952 | 349,369,862 | 349,369,862 |
| 2008 | $1,328,830,202 | 313,995,411 | 313,995,411 |
| 2009 | $1,401,217,690 | 317,610,080 | 317,610,080 |
| 2010 | $1,605,447,550 | 372,797,853 | 372,797,853 |
| 2011 | $2,071,194,624 | 427,990,903 | 427,990,903 |
Note: Quantity represents Weight in kilograms
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