2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $200,000 $400,000 $600,000 $800,000 $1,000,000 $1,200,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $894,576 | 2,690,945 | 2,690,945 |
| 2006 | $814,837 | 2,651,545 | 2,651,545 |
| 2007 | $987,618 | 2,893,226 | 2,893,226 |
| 2008 | $846,842 | 1,572,207 | 1,572,207 |
| 2009 | $680,402 | 1,098,979 | 1,098,979 |
| 2010 | $776,277 | 1,219,260 | 1,219,260 |
| 2011 | $902,500 | 1,427,306 | 1,427,306 |
Note: Quantity represents Weight in kilograms
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