2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $5,000,000 $10,000,000 $15,000,000 $20,000,000 $25,000,000 $30,000,000 $35,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,896,872 | 470,980 | 470,980 |
| 2006 | $4,764,643 | 766,158 | 766,158 |
| 2007 | $9,142,390 | 1,435,475 | 1,435,475 |
| 2008 | $12,729,344 | 1,897,553 | 1,897,553 |
| 2009 | $20,603,281 | 2,798,169 | 2,798,169 |
| 2010 | $23,585,698 | 3,029,449 | 3,029,449 |
| 2011 | $28,915,325 | 3,282,348 | 3,282,348 |
Note: Quantity represents Weight in kilograms
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