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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $455,066,000 | 305,301,700 | 305,301,700 |
| 2006 | $437,767,000 | 268,855,828 | 268,855,828 |
| 2007 | $522,622,000 | 292,178,318 | 292,178,318 |
| 2008 | $510,946,000 | 254,089,100 | 254,089,100 |
| 2009 | $440,935,000 | 271,497,763 | 271,497,763 |
| 2010 | $459,705,241 | 270,474,980 | 270,474,980 |
| 2011 | $438,112,687 | 215,743,904 | 215,743,904 |
Note: Quantity represents Weight in kilograms
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