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 | $2,092,469 | 997,103 | 997,103 |
| 2006 | $1,720,883 | 694,699 | 694,699 |
| 2007 | $1,561,566 | 533,558 | 533,558 |
| 2008 | $117,843 | 25,499 | 25,499 |
| 2009 | $132,823 | 33,754 | 33,754 |
| 2010 | $37,909 | 7,919 | 7,919 |
| 2011 | $25,706 | 2,320 | 2,320 |
Note: Quantity represents Weight in kilograms
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