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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $704,752 | 25,565 | 37,909 |
| 2006 | $1,416,370 | 52,711 | 76,179 |
| 2007 | $6,210,815 | 382,980 | 620,063 |
| 2008 | $5,696,124 | 247,829 | 353,862 |
| 2009 | $16,503,119 | 1,411,237 | 1,602,988 |
| 2010 | $8,996,271 | 388,727 | 613,797 |
| 2011 | $9,115,888 | 175,974 | 0 |
Note: Quantity represents Number of pairs
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