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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $464,547,999 | 12,555,351 | 12,555,351 |
| 2006 | $522,988,296 | 14,134,819 | 14,134,819 |
| 2007 | $579,748,927 | 16,510,199 | 16,510,199 |
| 2008 | $618,143,053 | 16,561,256 | 16,561,256 |
| 2009 | $578,234,829 | 13,623,334 | 13,623,334 |
| 2010 | $829,505,484 | 21,868,263 | 21,868,263 |
| 2011 | $1,003,879,170 | 28,171,557 | 28,171,557 |
Note: Quantity represents Weight in kilograms
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