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 | $18,482,382 | 1,620,316 | 436,557 |
| 2006 | $21,141,289 | 1,740,453 | 499,361 |
| 2007 | $21,039,984 | 1,755,758 | 0 |
| 2008 | $21,939,091 | 1,588,420 | 0 |
| 2009 | $19,981,313 | 1,348,816 | 0 |
| 2010 | $21,930,670 | 1,287,542 | 0 |
| 2011 | $25,899,809 | 1,672,732 | 0 |
Note: Quantity represents Number of items
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