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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $546,954,434 | 265,936,343 | 265,936,343 |
| 2006 | $790,847,667 | 286,344,722 | 286,344,722 |
| 2007 | $972,913,852 | 319,787,330 | 319,787,330 |
| 2008 | $728,608,176 | 238,799,211 | 238,799,211 |
| 2009 | $272,308,391 | 126,489,466 | 126,489,466 |
| 2010 | $440,889,418 | 191,110,631 | 191,110,631 |
| 2011 | $599,483,763 | 212,575,266 | 212,575,266 |
Note: Quantity represents Weight in kilograms
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