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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $7,925,144 | 158,199 | 200,001 |
| 2006 | $9,141,114 | 182,472 | 213,117 |
| 2007 | $9,833,253 | 174,681 | 248,805 |
| 2008 | $6,261,129 | 79,923 | 104,390 |
| 2009 | $6,010,955 | 69,039 | 87,239 |
| 2010 | $5,921,988 | 72,300 | 70,352 |
| 2011 | $5,608,111 | 84,101 | 67,566 |
Note: Quantity represents Number of pairs
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