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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $28,836,207 | 1,773,464 | 739,421 |
| 2006 | $34,671,563 | 1,966,956 | 803,146 |
| 2007 | $22,695,190 | 1,246,628 | 501,591 |
| 2008 | $20,576,292 | 1,151,763 | 408,838 |
| 2009 | $59,009,634 | 1,826,043 | 564,368 |
| 2010 | $64,556,179 | 1,868,320 | 585,707 |
| 2011 | $79,242,742 | 2,225,207 | 690,733 |
Note: Quantity represents Number of pairs
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