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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $665,695,809 | 3,644,605,255 | 3,644,605,255 |
| 2006 | $656,060,294 | 3,524,075,938 | 3,524,075,938 |
| 2007 | $828,213,119 | 3,178,644,077 | 3,178,644,077 |
| 2008 | $1,274,363,594 | 2,682,305,322 | 2,682,305,322 |
| 2009 | $949,473,231 | 3,805,076,417 | 3,805,076,417 |
| 2010 | $1,067,054,665 | 4,384,385,476 | 4,384,385,476 |
| 2011 | $1,647,060,752 | 4,671,335,242 | 4,671,335,242 |
Note: Quantity represents Weight in kilograms
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