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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $14,696,148 | 588,580 | 248,375 |
| 2006 | $18,944,383 | 666,890 | 329,338 |
| 2007 | $21,169,470 | 714,388 | 359,525 |
| 2008 | $22,438,961 | 698,350 | 344,323 |
| 2009 | $22,815,893 | 808,736 | 385,401 |
| 2010 | $24,075,979 | 839,734 | 381,474 |
| 2011 | $25,443,340 | 631,251 | 315,747 |
Note: Quantity represents Number of pairs
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