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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,273,149 | 1,045,462 | 1,045,462 |
| 2006 | $4,464,188 | 2,053,161 | 2,053,161 |
| 2007 | $15,295,315 | 380,268,747 | 380,268,747 |
| 2008 | $20,380,607 | 530,120,774 | 530,120,774 |
| 2009 | $24,161,421 | 611,284,921 | 611,284,921 |
| 2010 | $37,570,455 | 705,600,269 | 705,600,269 |
| 2011 | $41,900,615 | 688,176,777 | 688,176,777 |
Note: Quantity represents Weight in kilograms
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