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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $405 | 5,000 | 5,000 |
| 2006 | $239 | 2,705 | 2,705 |
| 2007 | $2,819 | 16,760 | 16,760 |
| 2008 | $15,284 | 60,893 | 60,893 |
| 2009 | $1,163,155 | 3,417,262 | 3,417,262 |
| 2010 | $12,341,372 | 38,436,625 | 38,436,625 |
| 2011 | $5,253,967 | 17,588,415 | 17,588,415 |
Note: Quantity represents Weight in kilograms
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