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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $12,028,028 | 946,946 | 6,352,105 |
| 2006 | $7,270,077 | 572,361 | 6,165,099 |
| 2007 | $8,053,593 | 660,395 | 1,663,485 |
| 2008 | $12,628,329 | 838,011 | 1,738,066 |
| 2009 | $21,983,943 | 1,255,566 | 5,662,805 |
| 2010 | $22,879,108 | 1,276,226 | 12,064,371 |
| 2011 | $30,894,602 | 1,713,128 | 6,340,256 |
Note: Quantity represents Number of pairs
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