2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $20,000,000 $40,000,000 $60,000,000 $80,000,000 $100,000,000 $120,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $11,383,495 | 2,759,378 | 2,759,378 |
| 2006 | $19,614,160 | 5,015,523 | 5,015,523 |
| 2007 | $56,699,801 | 12,965,528 | 12,965,528 |
| 2008 | $95,209,021 | 17,294,031 | 17,294,031 |
| 2009 | $60,856,685 | 12,291,376 | 12,291,376 |
| 2010 | $55,863,300 | 9,790,746 | 9,790,746 |
| 2011 | $60,576,337 | 10,799,794 | 10,799,794 |
Note: Quantity represents Weight in kilograms
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