2004 2005 2006 2007 2008 2009 2010 2011 2012
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,074 | 1,404 | 1,404 |
| 2006 | $460 | 158 | 158 |
| 2007 | $3,242 | 573 | 573 |
| 2008 | $2,744 | 771 | 771 |
| 2009 | $13,259 | 16,143 | 16,143 |
| 2010 | $754 | 211 | 211 |
| 2011 | $203 | 18 | 18 |
Note: Quantity represents Weight in kilograms
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