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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,011,131,000 | 268,629,500 | 268,629,500 |
| 2006 | $2,249,432,000 | 333,099,100 | 333,099,100 |
| 2007 | $2,783,492,000 | 370,105,732 | 370,105,732 |
| 2008 | $3,060,381,000 | 383,506,476 | 383,506,476 |
| 2009 | $1,451,603,000 | 269,848,486 | 269,848,486 |
| 2010 | $2,247,526,316 | 291,277,600 | 291,277,600 |
| 2011 | $2,740,310,956 | 292,026,167 | 292,026,167 |
Note: Quantity represents Weight in kilograms
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