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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,059,068 | 348,594 | 880,340 |
| 2006 | $1,302,996 | 460,696 | 1,131,514 |
| 2007 | $1,494,917 | 500,770 | 1,264,964 |
| 2008 | $1,479,129 | 347,235 | 950,638 |
| 2009 | $1,517,259 | 359,217 | 955,057 |
| 2010 | $1,069,674 | 230,698 | 604,735 |
| 2011 | $169,353 | 19,478 | 47,958 |
Note: Quantity represents Number of pairs
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