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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,168,257 | 36,319 | 74,037 |
| 2006 | $1,334,988 | 37,402 | 69,685 |
| 2007 | $1,148,159 | 40,146 | 60,060 |
| 2008 | $952,872 | 35,026 | 61,612 |
| 2009 | $937,326 | 29,193 | 50,083 |
| 2010 | $232,890 | 11,949 | 15,321 |
| 2011 | $905,467 | 21,693 | 28,398 |
Note: Quantity represents Number of pairs
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