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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $405,803,891 | 146,866,212 | 146,866,212 |
| 2006 | $592,424,710 | 201,464,928 | 201,464,928 |
| 2007 | $908,812,093 | 285,718,349 | 285,718,349 |
| 2008 | $1,279,632,075 | 329,417,208 | 329,417,208 |
| 2009 | $1,037,880,310 | 258,676,061 | 258,676,061 |
| 2010 | $1,476,298,074 | 353,601,715 | 353,601,715 |
| 2011 | $1,920,167,923 | 403,665,892 | 403,665,892 |
Note: Quantity represents Weight in kilograms
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