2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $500,000 $1,000,000 $1,500,000 $2,000,000 $2,500,000 $3,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $106,576 | 49,421 | 49,421 |
| 2006 | $246,361 | 163,205 | 163,205 |
| 2007 | $2,279,246 | 926,469 | 926,469 |
| 2008 | $137,157 | 33,016 | 33,016 |
| 2009 | $320,977 | 135,810 | 135,810 |
| 2010 | $647,188 | 193,548 | 193,548 |
| 2011 | $859,139 | 110,871 | 110,871 |
Note: Quantity represents Weight in kilograms
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