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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $224,369 | 95,100 | 23,963 |
| 2006 | $1,000,761 | 317,813 | 513,467 |
| 2007 | $1,130,261 | 259,313 | 424,260 |
| 2008 | $832,118 | 113,627 | 195,926 |
| 2009 | $460,226 | 40,379 | 64,670 |
| 2010 | $2,529,166 | 455,409 | 774,923 |
| 2011 | $1,598,860 | 242,578 | 409,644 |
Note: Quantity represents Number of pairs
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