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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $269,520,000 | 69,144,909 | 69,144,909 |
| 2006 | $306,800,000 | 79,692,800 | 79,692,800 |
| 2007 | $387,077,000 | 85,848,500 | 85,848,500 |
| 2008 | $495,874,000 | 94,150,543 | 94,150,543 |
| 2009 | $499,368,000 | 103,080,572 | 103,080,572 |
| 2010 | $550,959,136 | 120,456,100 | 120,456,100 |
| 2011 | $714,382,715 | 144,367,548 | 144,367,548 |
Note: Quantity represents Weight in kilograms
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