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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $879,644 | 30,443 | 35,821 |
| 2006 | $1,163,875 | 40,280 | 40,032 |
| 2007 | $1,379,798 | 42,331 | 30,736 |
| 2008 | $3,034,860 | 84,295 | 25,171 |
| 2009 | $3,066,049 | 80,268 | 26,214 |
| 2010 | $3,296,003 | 87,760 | 30,705 |
| 2011 | $4,213,328 | 112,266 | 41,490 |
Note: Quantity represents Number of pairs
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