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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $347,457,405 | 542,891,562 | 542,891,562 |
| 2006 | $361,188,700 | 707,256,171 | 707,256,171 |
| 2007 | $310,096,421 | 500,162,517 | 500,162,517 |
| 2008 | $189,997,650 | 304,993,561 | 304,993,561 |
| 2009 | $116,368,410 | 298,490,425 | 298,490,425 |
| 2010 | $25,335,339 | 59,539,949 | 59,539,949 |
| 2011 | $9,716,397 | 18,413,106 | 18,413,106 |
Note: Quantity represents Weight in kilograms
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