2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $5,000,000 $10,000,000 $15,000,000 $20,000,000 $25,000,000 $30,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $9,780,343 | 2,553,001 | 0 |
| 2006 | $22,302,358 | 6,490,187 | 0 |
| 2007 | $23,351,856 | 4,504,619 | 0 |
| 2008 | $14,629,238 | 3,642,230 | 0 |
| 2009 | $12,849,266 | 2,064,261 | 0 |
| 2010 | $4,542,048 | 728,712 | 0 |
| 2011 | $13,199,643 | 2,657,515 | 0 |
Note: Quantity represents No Quantity
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