2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $1,000,000 $2,000,000 $3,000,000 $4,000,000 $5,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $531,974 | 972,761 | 972,761 |
| 2006 | $358,094 | 217,953 | 217,953 |
| 2007 | $304,776 | 145,393 | 145,393 |
| 2008 | $447,090 | 182,160 | 182,160 |
| 2009 | $2,226,360 | 1,605,104 | 1,605,104 |
| 2010 | $3,913,140 | 2,352,677 | 2,352,677 |
| 2011 | $4,222,052 | 2,642,300 | 2,642,300 |
Note: Quantity represents Weight in kilograms
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