2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $200,000 $400,000 $600,000 $800,000 $1,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $11,000 | 1,650 | 1,650 |
| 2006 | $37,000 | 6,200 | 6,200 |
| 2007 | $133,000 | 904,000 | 904,000 |
| 2008 | $256,000 | 1,544,400 | 1,544,400 |
| 2009 | $739,000 | 2,686,400 | 2,686,400 |
| 2010 | $848,000 | 5,932,900 | 5,932,900 |
| 2011 | $126,000 | 488,900 | 488,900 |
Note: Quantity represents Weight in kilograms
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