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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $13,254,000 | 662,500 | 1,898,229 |
| 2006 | $11,876,000 | 348,261 | 1,700,873 |
| 2007 | $11,028,000 | 673,843 | 1,668,912 |
| 2008 | $4,675,000 | 229,066 | 489,439 |
| 2009 | $6,745,000 | 515,100 | 625,580 |
| 2010 | $7,613,000 | 930,889 | 592,357 |
| 2011 | $11,741,000 | 622,659 | 1,169,986 |
Note: Quantity represents Number of pairs
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