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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,225,840 | 83,835 | 84,192 |
| 2006 | $1,912,502 | 100,388 | 143,649 |
| 2007 | $2,045,533 | 78,612 | 143,248 |
| 2008 | $1,634,067 | 40,503 | 74,837 |
| 2009 | $976,348 | 45,677 | 56,794 |
| 2010 | $1,673,714 | 28,715 | 102,029 |
| 2011 | $2,026,058 | 42,092 | 73,328 |
Note: Quantity represents Number of pairs
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