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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,474 | 821 | 821 |
| 2006 | $3,837 | 2,393 | 2,393 |
| 2007 | $20,392 | 12,352 | 12,352 |
| 2008 | $54,557 | 74,948 | 74,948 |
| 2009 | $35,460 | 55,140 | 55,140 |
| 2010 | $39,067 | 19,878 | 19,878 |
| 2011 | $15,058 | 6,793 | 6,793 |
Note: Quantity represents Weight in kilograms
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