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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $35,118,000 | 919,830,500 | 919,830,500 |
| 2006 | $30,860,000 | 682,969,500 | 682,969,500 |
| 2007 | $59,914,000 | 1,051,733,000 | 1,051,733,000 |
| 2008 | $76,126,000 | 1,120,077,800 | 1,120,077,800 |
| 2009 | $28,412,000 | 467,042,100 | 467,042,100 |
| 2010 | $38,911,763 | 680,552,200 | 680,552,200 |
| 2011 | $45,277,505 | 761,405,732 | 761,405,732 |
Note: Quantity represents Weight in kilograms
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