2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $2,000,000 $4,000,000 $6,000,000 $8,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $7,229,745 | 1,730,559 | 1,730,559 |
| 2006 | $5,276,483 | 939,091 | 939,091 |
| 2007 | $4,631,225 | 742,136 | 742,136 |
| 2008 | $3,638,267 | 522,953 | 522,953 |
| 2009 | $6,304,520 | 1,078,009 | 1,078,009 |
| 2010 | $5,920,133 | 1,052,803 | 1,052,803 |
| 2011 | $6,704,911 | 1,086,008 | 1,086,008 |
Note: Quantity represents Weight in kilograms
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