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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $283,546,000 | 127,091,500 | 127,091,500 |
| 2006 | $353,002,000 | 154,146,900 | 154,146,900 |
| 2007 | $413,405,000 | 169,294,800 | 169,294,800 |
| 2008 | $512,504,000 | 186,795,500 | 186,795,500 |
| 2009 | $426,566,000 | 149,824,402 | 149,824,402 |
| 2010 | $438,389,699 | 154,787,636 | 154,787,636 |
| 2011 | $511,867,575 | 158,504,501 | 158,504,501 |
Note: Quantity represents Weight in kilograms
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