2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $10,000,000 $20,000,000 $30,000,000 $40,000,000 $50,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $12,489,577 | 1,498,749 | 1,498,749 |
| 2006 | $11,052,686 | 911,375 | 911,375 |
| 2007 | $19,654,342 | 1,119,689 | 1,119,689 |
| 2008 | $37,631,971 | 1,397,331 | 1,397,331 |
| 2009 | $18,029,798 | 948,761 | 948,761 |
| 2010 | $18,979,432 | 777,043 | 777,043 |
| 2011 | $39,000,318 | 914,510 | 914,510 |
Note: Quantity represents Weight in kilograms
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