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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $16,292,316 | 1,274,445 | 1,339,788 |
| 2006 | $20,111,688 | 1,561,720 | 1,592,086 |
| 2007 | $21,977,727 | 1,487,967 | 1,704,203 |
| 2008 | $32,494,409 | 1,859,938 | 2,232,789 |
| 2009 | $39,676,750 | 2,241,608 | 2,636,771 |
| 2010 | $50,703,171 | 2,744,957 | 3,259,962 |
| 2011 | $61,608,419 | 2,766,858 | 3,355,023 |
Note: Quantity represents Number of pairs
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