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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $26,364,509 | 913,657 | 731,842 |
| 2006 | $26,657,056 | 923,796 | 894,246 |
| 2007 | $43,182,211 | 1,352,246 | 1,272,303 |
| 2008 | $56,155,185 | 1,490,354 | 1,369,165 |
| 2009 | $60,118,535 | 1,407,512 | 2,826,335 |
| 2010 | $38,776,118 | 986,873 | 984,896 |
Note: Quantity represents Number of pairs
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