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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $373,029 | 46,892 | 48,043 |
| 2006 | $781,821 | 134,727 | 204,473 |
| 2007 | $676,632 | 60,915 | 59,242 |
| 2008 | $477,988 | 53,467 | 60,330 |
| 2009 | $460,425 | 60,940 | 55,110 |
| 2010 | $1,083,054 | 108,298 | 93,611 |
| 2011 | $1,252,842 | 148,052 | 144,176 |
Note: Quantity represents Number of pairs
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