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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $807,257,461 | 236,638,589 | 236,638,589 |
| 2006 | $856,080,316 | 232,840,181 | 232,840,181 |
| 2007 | $936,217,876 | 237,223,244 | 237,223,244 |
| 2008 | $1,227,912,429 | 402,320,163 | 402,320,163 |
| 2009 | $1,166,380,733 | 274,476,390 | 274,476,390 |
| 2010 | $1,294,865,758 | 294,464,348 | 294,464,348 |
| 2011 | $1,561,418,214 | 326,537,548 | 326,537,548 |
Note: Quantity represents Weight in kilograms
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