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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $20,686,899 | 1,135,771 | 1,183,331 |
| 2006 | $18,066,575 | 903,989 | 1,002,848 |
| 2007 | $15,692,187 | 692,842 | 722,082 |
| 2008 | $14,906,860 | 621,324 | 673,630 |
| 2009 | $8,374,417 | 401,014 | 386,157 |
| 2010 | $16,107,150 | 607,147 | 710,253 |
| 2011 | $24,138,796 | 871,896 | 1,115,678 |
Note: Quantity represents Number of pairs
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