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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,946,004,310 | 40,692,687,984 | 40,692,687,984 |
| 2006 | $4,769,422,190 | 33,949,531,200 | 33,949,531,200 |
| 2007 | $6,511,386,110 | 33,859,207,460 | 33,859,207,460 |
| 2008 | $9,438,805,610 | 35,546,699,148 | 35,546,699,148 |
| 2009 | $7,979,357,700 | 25,656,865,664 | 25,656,865,664 |
| 2010 | $9,392,939,740 | 11,576,780,387 | 11,576,780,387 |
| 2011 | $14,046,027,610 | 30,285,749,230 | 30,285,749,230 |
Note: Quantity represents Weight in kilograms
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