2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $2,000,000 $4,000,000 $6,000,000 $8,000,000 $10,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,580,908 | 39,054 | 39,054 |
| 2006 | $7,237,187 | 37,457 | 37,457 |
| 2007 | $8,843,286 | 43,202 | 43,202 |
| 2008 | $7,691,301 | 38,281 | 38,281 |
| 2009 | $4,626,544 | 18,713 | 18,713 |
| 2010 | $8,371,413 | 41,553 | 41,553 |
| 2011 | $8,322,969 | 31,809 | 31,809 |
Note: Quantity represents Weight in kilograms
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