2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $10,000,000 $20,000,000 $30,000,000 $40,000,000 $50,000,000 $60,000,000 $70,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,621,068 | 285,582 | 285,582 |
| 2006 | $2,831,771 | 199,669 | 199,669 |
| 2007 | $3,160,110 | 222,651 | 222,651 |
| 2008 | $9,280,419 | 743,799 | 743,799 |
| 2009 | $58,206,292 | 5,031,885 | 5,031,885 |
| 2010 | $9,875,920 | 722,631 | 722,631 |
| 2011 | $20,040,127 | 1,025,989 | 1,025,989 |
Note: Quantity represents Weight in kilograms
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