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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $18,318,187 | 689,771,800 | 689,771,800 |
| 2006 | $13,401,717 | 436,146,300 | 436,146,300 |
| 2007 | $13,666,234 | 483,601,338 | 483,601,338 |
| 2008 | $16,905,352 | 458,253,500 | 458,253,500 |
| 2009 | $14,681,807 | 1,134,408,800 | 1,134,408,800 |
| 2010 | $18,783,327 | 609,988,400 | 609,988,400 |
| 2011 | $13,918,430 | 403,528,800 | 403,528,800 |
Note: Quantity represents Weight in kilograms
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