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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,638,506 | 69,869 | 111,407 |
| 2006 | $2,235,432 | 95,323 | 147,227 |
| 2007 | $2,078,370 | 70,892 | 144,184 |
| 2008 | $2,262,993 | 79,271 | 150,070 |
| 2009 | $2,194,566 | 70,574 | 145,974 |
| 2010 | $326,352 | 10,027 | 23,565 |
| 2011 | $1,060,638 | 31,248 | 75,241 |
Note: Quantity represents Number of pairs
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