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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $14,345,538 | 950,744 | 485,404 |
| 2006 | $28,107,990 | 1,125,201 | 535,214 |
| 2007 | $29,004,037 | 1,059,811 | 561,124 |
| 2008 | $34,026,146 | 1,175,595 | 603,055 |
| 2009 | $16,739,408 | 432,832 | 229,724 |
| 2010 | $25,164,793 | 789,873 | 430,272 |
| 2011 | $41,225,910 | 1,280,102 | 342,087 |
Note: Quantity represents Number of pairs
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