2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $5,000,000 $10,000,000 $15,000,000 $20,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,155,007 | 257,630 | 257,630 |
| 2006 | $8,128,659 | 339,699 | 339,699 |
| 2007 | $14,665,888 | 754,869 | 754,869 |
| 2008 | $7,475,996 | 478,844 | 478,844 |
| 2009 | $7,549,049 | 631,811 | 631,811 |
| 2010 | $6,764,091 | 529,146 | 529,146 |
| 2011 | $12,770,818 | 679,966 | 679,966 |
Note: Quantity represents Weight in kilograms
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