2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $100,000 $200,000 $300,000 $400,000 $500,000 $600,000 $700,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $581,576 | 125,863 | 125,863 |
| 2006 | $408,282 | 71,201 | 71,201 |
| 2007 | $430,866 | 69,826 | 69,826 |
| 2008 | $395,266 | 62,416 | 62,416 |
| 2009 | $195,940 | 39,510 | 39,510 |
| 2010 | $134,501 | 28,907 | 28,907 |
| 2011 | $26,255 | 2,937 | 2,937 |
Note: Quantity represents Weight in kilograms
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