2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $20,000 $40,000 $60,000 $80,000 $100,000 $120,000 $140,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $30,802 | 150,252 | 150,252 |
| 2006 | $20,450 | 26,560 | 26,560 |
| 2007 | $17,059 | 17,430 | 17,430 |
| 2008 | $14,651 | 9,611 | 9,611 |
| 2009 | $23,794 | 31,341 | 31,341 |
| 2010 | $99,027 | 104,410 | 104,410 |
| 2011 | $123,678 | 135,991 | 135,991 |
Note: Quantity represents Weight in kilograms
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