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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,368,622,000 | 343,830,997 | 343,830,997 |
| 2006 | $2,701,439,000 | 351,343,172 | 351,343,172 |
| 2007 | $3,095,073,000 | 357,372,224 | 357,372,224 |
| 2008 | $3,676,795,000 | 368,799,883 | 368,799,883 |
| 2009 | $3,080,777,000 | 332,634,585 | 332,634,585 |
| 2010 | $3,530,846,106 | 395,540,456 | 395,540,456 |
| 2011 | $4,210,205,380 | 422,414,580 | 422,414,580 |
Note: Quantity represents Weight in kilograms
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