2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $50,000 $100,000 $150,000 $200,000 $250,000 $300,000 $350,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $5,327 | 3,173 | 3,173 |
| 2006 | $5,511 | 1,072 | 1,072 |
| 2007 | $93,542 | 537,644 | 537,644 |
| 2008 | $302,565 | 1,218,452 | 1,218,452 |
| 2009 | $164,608 | 675,051 | 675,051 |
| 2010 | $259,257 | 955,018 | 955,018 |
| 2011 | $56,529 | 170,948 | 170,948 |
Note: Quantity represents Weight in kilograms
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