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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $789,027 | 10,886 | 72,923 |
| 2006 | $1,267,705 | 17,513 | 14,149 |
| 2007 | $1,611,830 | 32,372 | 33,440 |
| 2008 | $1,561,150 | 19,014 | 16,021 |
| 2009 | $738,912 | 8,641 | 7,413 |
| 2010 | $1,051,913 | 13,986 | 10,878 |
| 2011 | $672,164 | 7,997 | 5,931 |
Note: Quantity represents Number of pairs
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