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 | $7,963,152 | 405,462 | 405,462 |
| 2006 | $5,683,687 | 392,316 | 392,316 |
| 2007 | $10,547,583 | 419,981 | 419,981 |
| 2008 | $14,821,862 | 550,306 | 550,306 |
| 2009 | $4,624,959 | 200,516 | 200,516 |
| 2010 | $5,306,622 | 233,583 | 233,583 |
| 2011 | $9,053,213 | 419,340 | 419,340 |
Note: Quantity represents Weight in kilograms
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