2004 2005 2006 2007 2008 2009 2010 2011 $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 | $15,682,752 | 2,616,818 | 2,616,818 |
| 2006 | $24,859,454 | 3,170,352 | 3,170,352 |
| 2007 | $21,301,827 | 4,344,902 | 4,344,902 |
| 2008 | $15,639,989 | 2,279,856 | 2,279,856 |
| 2009 | $11,443,108 | 2,261,674 | 2,261,674 |
| 2010 | $13,525,388 | 1,880,614 | 1,880,614 |
Note: Quantity represents Weight in kilograms
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