2004 2005 2006 2007 2008 2009 2010 2011 $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 | $35,506,503 | 1,982,210 | 1,982,210 |
| 2006 | $52,035,422 | 2,599,742 | 2,599,742 |
| 2007 | $78,027,859 | 3,394,692 | 3,394,692 |
| 2008 | $83,704,391 | 3,257,927 | 3,257,927 |
| 2009 | $68,166,377 | 2,401,801 | 2,401,801 |
| 2010 | $102,922,961 | 3,257,185 | 3,257,185 |
Note: Quantity represents Weight in kilograms
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