2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $5,000,000 $10,000,000 $15,000,000 $20,000,000 $25,000,000 $30,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $14,835,539 | 157,596 | 157,596 |
| 2006 | $5,406,994 | 215,979 | 215,979 |
| 2007 | $6,338,670 | 108,136 | 108,136 |
| 2008 | $9,140,894 | 76,145 | 76,145 |
| 2009 | $19,487,318 | 124,437 | 124,437 |
| 2010 | $25,502,251 | 240,444 | 240,444 |
| 2011 | $10,424,573 | 162,886 | 162,886 |
Note: Quantity represents Weight in kilograms
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