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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,395,617,672 | 241,901,927 | 241,901,927 |
| 2006 | $1,474,344,003 | 260,500,881 | 260,500,881 |
| 2007 | $1,634,103,041 | 284,761,576 | 284,761,576 |
| 2008 | $1,688,935,517 | 288,080,459 | 288,080,459 |
| 2009 | $1,518,405,124 | 260,740,729 | 260,740,729 |
| 2010 | $1,786,456,244 | 294,867,784 | 294,867,784 |
| 2011 | $1,811,004,222 | 237,148,727 | 237,148,727 |
Note: Quantity represents Weight in kilograms
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