2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $200,000 $400,000 $600,000 $800,000 $1,000,000 $1,200,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $680,935 | 1,703,410 | 1,703,410 |
| 2006 | $637,803 | 1,435,900 | 1,435,900 |
| 2007 | $750,890 | 1,367,912 | 1,367,912 |
| 2008 | $852,603 | 1,376,100 | 1,376,100 |
| 2009 | $945,379 | 1,570,992 | 1,570,992 |
| 2010 | $891,726 | 1,526,840 | 1,526,840 |
| 2011 | $874,373 | 1,309,560 | 1,309,560 |
Note: Quantity represents Weight in kilograms
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