2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $2,000,000 $4,000,000 $6,000,000 $8,000,000 $10,000,000 $12,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,547,133 | 286,542 | 286,542 |
| 2006 | $3,984,944 | 290,316 | 290,316 |
| 2007 | $5,027,621 | 385,278 | 385,278 |
| 2008 | $7,255,966 | 569,585 | 569,585 |
| 2009 | $9,546,932 | 947,551 | 947,551 |
| 2010 | $7,472,867 | 1,030,537 | 1,030,537 |
| 2011 | $6,647,186 | 852,607 | 852,607 |
Note: Quantity represents Weight in kilograms
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