2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $500,000 $1,000,000 $1,500,000 $2,000,000 $2,500,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,239,900 | 824,492 | 824,492 |
| 2006 | $1,608,300 | 510,533 | 510,533 |
| 2007 | $1,596,900 | 463,277 | 463,277 |
| 2008 | $1,949,300 | 513,537 | 513,537 |
| 2009 | $1,075,200 | 448,105 | 448,105 |
| 2010 | $1,587,400 | 609,353 | 609,353 |
| 2011 | $1,995,000 | 645,038 | 645,038 |
Note: Quantity represents Weight in kilograms
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