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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $361,257,037 | 3,293,343,659 | 3,293,343,659 |
| 2006 | $304,786,685 | 2,608,839,770 | 2,608,839,770 |
| 2007 | $353,518,040 | 2,822,237,511 | 2,822,237,511 |
| 2008 | $737,060,566 | 3,968,405,831 | 3,968,405,831 |
| 2009 | $292,781,107 | 1,436,498,853 | 1,436,498,853 |
| 2010 | $452,467,062 | 2,654,873,831 | 2,654,873,831 |
| 2011 | $679,837,187 | 3,361,651,779 | 3,361,651,779 |
Note: Quantity represents Weight in kilograms
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