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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $683,182,559 | 4,578,467,955 | 4,578,467,955 |
| 2006 | $645,634,775 | 6,207,575,182 | 6,207,575,182 |
| 2007 | $1,300,322,163 | 6,631,929,011 | 6,631,929,011 |
| 2008 | $3,466,739,796 | 7,567,901,616 | 7,567,901,616 |
| 2009 | $1,772,831,675 | 9,617,615,076 | 9,617,615,076 |
| 2010 | $2,807,453,370 | 11,578,206,164 | 11,578,206,164 |
| 2011 | $2,678,146,867 | 12,971,878,134 | 12,971,878,134 |
Note: Quantity represents Weight in kilograms
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