2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $5,000,000 $10,000,000 $15,000,000 $20,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,112,215 | 208,518 | 208,518 |
| 2006 | $8,359,395 | 239,055 | 239,055 |
| 2007 | $11,291,013 | 360,150 | 360,150 |
| 2008 | $14,516,053 | 719,755 | 719,755 |
| 2009 | $9,944,591 | 142,126 | 142,126 |
| 2010 | $13,826,525 | 273,238 | 273,238 |
| 2011 | $13,901,081 | 297,757 | 297,757 |
Note: Quantity represents Weight in kilograms
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