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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $901,844,563 | 1,902,918,992 | 1,902,918,992 |
| 2006 | $1,054,873,703 | 2,127,076,976 | 2,127,076,976 |
| 2007 | $1,207,940,685 | 2,190,905,032 | 2,190,905,032 |
| 2008 | $1,418,525,978 | 2,126,352,016 | 2,126,352,016 |
| 2009 | $799,588,973 | 1,747,236,992 | 1,747,236,992 |
| 2010 | $1,347,017,262 | 2,199,587,944 | 2,199,587,944 |
| 2011 | $1,302,162,188 | 2,182,360,016 | 2,182,360,016 |
Note: Quantity represents Weight in kilograms
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