2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $200,000 $400,000 $600,000 $800,000 $1,000,000 $1,200,000 $1,400,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $55,118 | 57,772 | 57,772 |
| 2006 | $62,366 | 71,997 | 71,997 |
| 2007 | $135,239 | 162,050 | 162,050 |
| 2008 | $366,754 | 448,566 | 448,566 |
| 2009 | $555,816 | 743,950 | 743,950 |
| 2010 | $1,125,844 | 1,483,990 | 1,483,990 |
| 2011 | $840,349 | 820,044 | 820,044 |
Note: Quantity represents Weight in kilograms
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