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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $176,695,769 | 1,246,427,308 | 1,246,427,308 |
| 2006 | $146,434,462 | 958,224,437 | 958,224,437 |
| 2007 | $258,580,259 | 1,089,636,846 | 1,089,636,846 |
| 2008 | $434,169,830 | 1,433,008,054 | 1,433,008,054 |
| 2009 | $274,841,098 | 1,315,855,475 | 1,315,855,475 |
| 2010 | $274,542,268 | 1,253,407,992 | 1,253,407,992 |
| 2011 | $595,941,726 | 1,849,499,648 | 1,849,499,648 |
Note: Quantity represents Weight in kilograms
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