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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,531,490,790 | 173,005 | 173,005 |
| 2006 | $1,343,595,192 | 95,284 | 95,284 |
| 2007 | $1,422,963,958 | 67,437 | 67,437 |
| 2008 | $766,653,106 | 621,771 | 621,771 |
| 2009 | $628,015,916 | 86,747 | 86,747 |
| 2010 | $523,707,483 | 36,232 | 36,232 |
| 2011 | $517,613,688 | 35,726 | 35,726 |
Note: Quantity represents Weight in kilograms
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