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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $24,045,000 | 2,989,211,200 | 2,989,211,200 |
| 2006 | $21,971,000 | 2,926,090,600 | 2,926,090,600 |
| 2007 | $19,937,000 | 2,237,677,837 | 2,237,677,837 |
| 2008 | $19,158,000 | 2,094,694,638 | 2,094,694,638 |
| 2009 | $15,619,000 | 1,767,331,000 | 1,767,331,000 |
| 2010 | $16,872,099 | 1,981,002,800 | 1,981,002,800 |
| 2011 | $22,007,124 | 2,188,430,447 | 2,188,430,447 |
Note: Quantity represents Weight in kilograms
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