2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $5,000,000 $10,000,000 $15,000,000 $20,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $16,366,735 | 338,859 | 1,156,362 |
| 2006 | $14,752,478 | 246,212 | 854,277 |
| 2007 | $13,088,307 | 169,852 | 553,730 |
| 2008 | $9,105,107 | 109,418 | 384,998 |
| 2009 | $6,628,710 | 101,940 | 333,864 |
| 2010 | $7,975,906 | 201,175 | 743,837 |
| 2011 | $8,536,866 | 220,138 | 684,991 |
Note: Quantity represents Number of items
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