2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $10,000 $20,000 $30,000 $40,000 $50,000 $60,000 $70,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $8,900 | 1,261 | 1,261 |
| 2006 | $5,500 | 900 | 900 |
| 2007 | $58,200 | 5,067 | 5,067 |
| 2008 | $4,900 | 486 | 486 |
| 2009 | $1,800 | 354 | 354 |
| 2010 | $7,300 | 534 | 534 |
| 2011 | $20,300 | 1,491 | 1,491 |
Note: Quantity represents Weight in kilograms
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