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| Year | Trade Value | Weight (kg) | Quantity |
| 2006 | $2,327,480 | 415,841 | 221,214 |
| 2007 | $2,409,428 | 306,264 | 233,459 |
| 2008 | $2,261,607 | 239,457 | 159,886 |
| 2009 | $2,214,322 | 278,995 | 132,461 |
| 2010 | $5,544,382 | 553,600 | 316,236 |
| 2011 | $5,080,383 | 442,973 | 160,997 |
Note: Quantity represents Number of pairs
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