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
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $11,854,304 | 3,508,773 | 3,508,773 |
| 2006 | $13,367,212 | 2,998,474 | 2,998,474 |
| 2007 | $22,105,490 | 3,388,041 | 3,388,041 |
| 2008 | $18,620,246 | 2,835,519 | 2,835,519 |
| 2009 | $12,900,285 | 2,967,722 | 2,967,722 |
| 2010 | $16,674,614 | 3,207,703 | 3,207,703 |
| 2011 | $15,962,518 | 2,904,637 | 2,904,637 |
Note: Quantity represents Weight in kilograms
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