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 | $1,809,000 | 16,811 | 16,811 |
| 2006 | $3,747,000 | 169,362 | 169,362 |
| 2007 | $3,609,000 | 22,906 | 22,906 |
| 2008 | $5,419,000 | 30,279 | 30,279 |
| 2009 | $4,239,000 | 21,537 | 21,537 |
| 2010 | $7,123,000 | 46,439 | 46,439 |
| 2011 | $9,472,000 | 69,913 | 69,913 |
Note: Quantity represents Weight in kilograms
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