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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $708,650,986 | 422,621,594 | 422,621,594 |
| 2006 | $724,258,149 | 405,581,421 | 405,581,421 |
| 2007 | $858,830,833 | 410,009,393 | 410,009,393 |
| 2008 | $930,870,263 | 409,208,247 | 409,208,247 |
| 2009 | $609,277,974 | 396,027,267 | 396,027,267 |
| 2010 | $936,857,163 | 437,071,638 | 437,071,638 |
| 2011 | $1,167,272,506 | 443,384,098 | 443,384,098 |
Note: Quantity represents Weight in kilograms
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