2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $5,000,000 $10,000,000 $15,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,360,573 | 4,029 | 4,029 |
| 2006 | $9,556,330 | 6,422 | 6,422 |
| 2007 | $12,965,115 | 7,069 | 7,069 |
| 2008 | $13,270,282 | 6,931 | 6,931 |
| 2009 | $5,206,048 | 2,665 | 2,665 |
| 2010 | $10,758,243 | 5,305 | 5,305 |
| 2011 | $11,824,274 | 9,879 | 9,879 |
Note: Quantity represents Weight in kilograms
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