2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $2,000,000 $4,000,000 $6,000,000 $8,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,424,000 | 12,165,300 | 12,165,300 |
| 2006 | $1,647,800 | 10,971,230 | 10,971,230 |
| 2007 | $2,218,200 | 12,896,900 | 12,896,900 |
| 2008 | $4,577,900 | 17,579,960 | 17,579,960 |
| 2009 | $4,575,500 | 20,827,840 | 20,827,840 |
| 2010 | $5,508,600 | 21,241,013 | 21,241,013 |
| 2011 | $6,558,400 | 23,689,000 | 23,689,000 |
Note: Quantity represents Weight in kilograms
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