2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $100,000 $200,000 $300,000 $400,000 $500,000 $600,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $113,898 | 329,346 | 329,346 |
| 2006 | $246,920 | 322,099 | 322,099 |
| 2007 | $327,247 | 243,575 | 243,575 |
| 2008 | $536,317 | 407,580 | 407,580 |
| 2009 | $393,681 | 341,242 | 341,242 |
| 2010 | $531,068 | 353,790 | 353,790 |
| 2011 | $444,057 | 625,638 | 625,638 |
Note: Quantity represents Weight in kilograms
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