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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,514,801 | 390,409 | 589,154 |
| 2006 | $3,927,214 | 574,037 | 751,039 |
| 2007 | $6,012,339 | 432,984 | 987,876 |
| 2008 | $3,842,667 | 465,651 | 623,258 |
| 2009 | $3,750,143 | 468,175 | 673,514 |
| 2010 | $4,264,214 | 500,795 | 744,650 |
| 2011 | $3,081,037 | 367,315 | 554,032 |
Note: Quantity represents Number of pairs
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