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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $151,005,000 | 665,881,000 | 665,881,000 |
| 2006 | $186,431,000 | 756,128,000 | 756,128,000 |
| 2007 | $161,318,000 | 537,858,500 | 537,858,500 |
| 2008 | $166,845,000 | 426,935,100 | 426,935,100 |
| 2009 | $83,940,000 | 357,397,451 | 357,397,451 |
| 2010 | $131,868,304 | 374,501,000 | 374,501,000 |
| 2011 | $184,686,798 | 412,773,288 | 412,773,288 |
Note: Quantity represents Weight in kilograms
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