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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $471 | 1,490 | 1,490 |
| 2006 | $566 | 840 | 840 |
| 2007 | $13,913 | 25,505 | 25,505 |
| 2008 | $49,215 | 79,067 | 79,067 |
| 2009 | $42,125 | 87,234 | 87,234 |
| 2010 | $9,656 | 11,230 | 11,230 |
| 2011 | $3,999 | 4,920 | 4,920 |
Note: Quantity represents Weight in kilograms
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