2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $10,000,000 $20,000,000 $30,000,000 $40,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $19,474,992 | 3,212,599 | 1,511 |
| 2006 | $22,892,843 | 3,293,492 | 983 |
| 2007 | $28,326,353 | 4,123,710 | 1,172 |
| 2008 | $35,138,511 | 4,929,592 | 1,539 |
| 2009 | $22,677,595 | 3,280,703 | 1,145 |
| 2010 | $21,405,153 | 2,188,231 | 802 |
| 2011 | $23,666,224 | 2,817,922 | 790 |
Note: Quantity represents Number of items
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