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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,988,847,237 | 377,258,631 | 377,258,631 |
| 2006 | $3,415,355,271 | 434,211,232 | 434,211,232 |
| 2007 | $3,317,090,163 | 436,309,514 | 436,309,514 |
| 2008 | $2,839,367,614 | 361,099,377 | 361,099,377 |
| 2009 | $1,967,880,209 | 220,697,065 | 220,697,065 |
| 2010 | $2,838,936,844 | 330,332,734 | 330,332,734 |
| 2011 | $3,709,830,233 | 441,248,283 | 441,248,283 |
Note: Quantity represents Weight in kilograms
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