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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,525,167,151 | 427,434,928 | 427,434,928 |
| 2006 | $1,634,724,715 | 391,612,652 | 391,612,652 |
| 2007 | $1,626,221,663 | 455,793,183 | 455,793,183 |
| 2008 | $1,658,525,155 | 441,318,693 | 441,318,693 |
| 2009 | $1,271,850,129 | 433,831,728 | 433,831,728 |
| 2010 | $1,456,194,210 | 534,706,334 | 534,706,334 |
| 2011 | $1,561,486,781 | 558,127,380 | 558,127,380 |
Note: Quantity represents Weight in kilograms
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