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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $18,645,535 | 252,996 | 226,018 |
| 2006 | $20,971,969 | 292,983 | 246,916 |
| 2007 | $23,159,211 | 246,084 | 210,255 |
| 2008 | $21,337,678 | 207,073 | 179,489 |
| 2009 | $21,341,508 | 233,333 | 198,152 |
| 2010 | $22,821,356 | 281,106 | 245,042 |
| 2011 | $33,176,367 | 385,470 | 347,788 |
Note: Quantity represents Number of pairs
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