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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $5,141,077 | 433,846 | 925,590 |
| 2006 | $6,534,233 | 343,263 | 1,013,961 |
| 2007 | $5,557,767 | 285,236 | 500,884 |
| 2008 | $7,357,263 | 276,428 | 1,072,943 |
| 2009 | $10,198,476 | 357,580 | 1,625,892 |
| 2010 | $13,123,786 | 690,605 | 2,620,057 |
| 2011 | $15,990,735 | 665,462 | 226,279 |
Note: Quantity represents Number of pairs
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