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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $17,135,003 | 646,994 | 223,472 |
| 2006 | $21,427,511 | 547,354 | 218,684 |
| 2007 | $15,514,465 | 480,282 | 139,533 |
| 2008 | $16,826,571 | 455,288 | 134,726 |
| 2009 | $13,557,607 | 402,268 | 111,906 |
| 2010 | $12,851,146 | 392,417 | 120,903 |
| 2011 | $11,758,754 | 379,588 | 114,412 |
Note: Quantity represents Number of pairs
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