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 | $8,669,571 | 5,079,019 | 5,079,019 |
| 2006 | $7,198,535 | 4,098,933 | 4,098,933 |
| 2007 | $7,302,141 | 4,353,430 | 4,353,430 |
| 2008 | $5,692,500 | 3,346,782 | 3,346,782 |
| 2009 | $3,903,325 | 2,435,982 | 2,435,982 |
| 2010 | $3,949,197 | 2,565,303 | 2,565,303 |
| 2011 | $4,318,270 | 2,544,325 | 2,544,325 |
Note: Quantity represents Weight in kilograms
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