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 | $60,000 | 26,087 | 26,087 |
| 2006 | $36,822 | 5,742 | 5,742 |
| 2007 | $34,862 | 7,902 | 7,902 |
| 2008 | $43,297 | 5,871 | 5,871 |
| 2009 | $59,096 | 8,170 | 8,170 |
| 2010 | $105,766 | 24,677 | 24,677 |
| 2011 | $120,402 | 29,217 | 29,217 |
Note: Quantity represents Weight in kilograms
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