2004 2005 2006 2007 2008 2009 2010 2011 $0 $10,000,000 $20,000,000 $30,000,000 $40,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $31,312,965 | 11,285,059 | 8,055,484 |
| 2006 | $29,486,579 | 9,285,130 | 6,727,901 |
| 2007 | $33,765,433 | 0 | 5,996,963 |
| 2008 | $26,721,682 | 916,183 | 2,482,535 |
| 2009 | $19,345,498 | 550,008 | 0 |
| 2010 | $21,649,806 | 726,511 | 1,993,621 |
Note: Quantity represents Number of items
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