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 | $3,118,555 | 3,957,001 | 3,957,001 |
| 2006 | $8,662,580 | 33,035,326 | 33,035,326 |
| 2007 | $310,333 | 212,509 | 212,509 |
| 2008 | $51,748 | 108,248 | 108,248 |
| 2009 | $2,034,393 | 7,210,595 | 7,210,595 |
| 2010 | $12,668,654 | 5,707,898 | 5,707,898 |
| 2011 | $27,128,168 | 10,350,760 | 10,350,760 |
Note: Quantity represents Weight in kilograms
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