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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,372,429,021 | 147,888,118 | 147,888,118 |
| 2006 | $1,279,538,210 | 146,872,444 | 146,872,444 |
| 2007 | $1,448,178,646 | 143,643,392 | 143,643,392 |
| 2008 | $1,467,406,902 | 130,907,033 | 130,907,033 |
| 2009 | $988,797,465 | 95,930,633 | 95,930,633 |
| 2010 | $1,261,697,667 | 117,364,363 | 117,364,363 |
| 2011 | $1,739,926,028 | 142,667,794 | 142,667,794 |
Note: Quantity represents Weight in kilograms
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