2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $2,000,000 $4,000,000 $6,000,000 $8,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,364,705 | 2,945,300 | 2,945,300 |
| 2006 | $2,690,631 | 1,640,000 | 1,640,000 |
| 2007 | $3,019,436 | 1,464,663 | 1,464,663 |
| 2008 | $2,358,034 | 1,131,533 | 1,131,533 |
| 2009 | $2,469,273 | 1,649,719 | 1,649,719 |
| 2010 | $6,847,673 | 3,957,228 | 3,957,228 |
| 2011 | $2,599,087 | 1,114,212 | 1,114,212 |
Note: Quantity represents Weight in kilograms
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