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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $9,812,562 | 593,063 | 369,090 |
| 2006 | $8,886,137 | 471,551 | 386,771 |
| 2007 | $11,601,614 | 494,786 | 471,444 |
| 2008 | $13,050,477 | 526,559 | 493,822 |
| 2009 | $15,722,359 | 751,996 | 537,546 |
| 2010 | $16,732,882 | 514,039 | 547,960 |
| 2011 | $21,861,366 | 819,315 | 677,560 |
Note: Quantity represents Number of pairs
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