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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,216,170,737 | 97,293,659 | 97,293,659 |
| 2006 | $1,228,611,212 | 0 | 0 |
| 2007 | $1,036,437,737 | 100,744,094 | 100,744,094 |
| 2008 | $729,974,010 | 62,165,529 | 62,165,529 |
| 2009 | $450,115,419 | 34,292,166 | 34,292,166 |
| 2010 | $404,242,512 | 32,832,892 | 32,832,892 |
| 2011 | $426,070,890 | 33,110,369 | 33,110,369 |
Note: Quantity represents Weight in kilograms
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