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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $988 | 1,080 | 1,080 |
| 2006 | $835 | 1,600 | 1,600 |
| 2007 | $6,545 | 46,000 | 46,000 |
| 2008 | $90,753 | 56,880 | 56,880 |
| 2009 | $21,134 | 23,990 | 23,990 |
| 2010 | $10,732 | 9,220 | 9,220 |
| 2011 | $1,319 | 1,740 | 1,740 |
Note: Quantity represents Weight in kilograms
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