2004 2005 2006 2007 2008 2009 2010 2011 $0 $5,000,000 $10,000,000 $15,000,000 $20,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,501,241 | 711,011 | 711,011 |
| 2006 | $903,352 | 72,490 | 72,490 |
| 2007 | $16,126,709 | 29,441,639 | 29,441,639 |
| 2008 | $14,960,860 | 27,857,043 | 27,857,043 |
| 2009 | $9,952,345 | 23,071,009 | 23,071,009 |
| 2010 | $11,671,600 | 26,053,135 | 26,053,135 |
Note: Quantity represents Weight in kilograms
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