2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $10,000,000 $20,000,000 $30,000,000 $40,000,000 $50,000,000 $60,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $26,092,696 | 984,247 | 984,247 |
| 2006 | $36,886,955 | 1,817,808 | 1,817,808 |
| 2007 | $38,170,640 | 1,049,863 | 1,049,863 |
| 2008 | $48,080,885 | 1,514,226 | 1,514,226 |
| 2009 | $36,154,410 | 54,988 | 54,988 |
| 2010 | $37,102,575 | 52,260 | 52,260 |
| 2011 | $41,955,762 | 15,237 | 15,237 |
Note: Quantity represents Weight in kilograms
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