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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $40,270,685 | 6,440,933 | 6,439,700 |
| 2006 | $40,404,318 | 8,046,106 | 6,461,069 |
| 2007 | $47,426,780 | 8,818,899 | 6,897,884 |
| 2008 | $54,176,752 | 9,535,869 | 6,644,947 |
| 2009 | $15,275,561 | 1,295,017 | 1,776,535 |
| 2010 | $28,485,712 | 1,564,361 | 3,030,715 |
| 2011 | $36,915,114 | 1,844,120 | 3,870,674 |
Note: Quantity represents Number of pairs
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