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 | $112,653 | 102,185 | 102,185 |
| 2006 | $257,985 | 380,100 | 380,100 |
| 2007 | $519,428 | 511,015 | 511,015 |
| 2008 | $630,171 | 729,082 | 729,082 |
| 2009 | $644,433 | 1,349,763 | 1,349,763 |
| 2010 | $755,495 | 1,185,830 | 1,185,830 |
| 2011 | $1,116,112 | 1,383,035 | 1,383,035 |
Note: Quantity represents Weight in kilograms
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