2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $5,000,000 $10,000,000 $15,000,000 $20,000,000 $25,000,000 $30,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,770,633 | 134,817 | 134,817 |
| 2006 | $9,338,438 | 211,149 | 211,149 |
| 2007 | $14,396,427 | 167,040 | 167,040 |
| 2008 | $15,288,541 | 158,931 | 158,931 |
| 2009 | $7,978,074 | 116,577 | 116,577 |
| 2010 | $11,925,683 | 176,911 | 176,911 |
| 2011 | $24,275,048 | 420,633 | 420,633 |
Note: Quantity represents Weight in kilograms
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